./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.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_07-cond_racing2.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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:47:17,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:47:17,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:47:17,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:47:17,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:47:17,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:47:17,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:47:17,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:47:17,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:47:17,698 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:47:17,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:47:17,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:47:17,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:47:17,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:47:17,701 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:47:17,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:47:17,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:47:17,702 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:47:17,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:47:17,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:47:17,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:47:17,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:47:17,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:47:17,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:47:17,705 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:47:17,705 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:47:17,705 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:47:17,706 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:47:17,706 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:47:17,712 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:47:17,712 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:47:17,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:47:17,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:47:17,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:47:17,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:47:17,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:47:17,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:47:17,715 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:47:17,715 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:47:17,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:47:17,716 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:47:17,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:47:17,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:47:17,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:47:17,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2024-11-17 07:47:17,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:47:17,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:47:17,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:47:17,994 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:47:17,994 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:47:17,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2024-11-17 07:47:19,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:47:19,821 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:47:19,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2024-11-17 07:47:19,853 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e5be584/80798f447ebd4df79422bebf23e70567/FLAG1598396ba [2024-11-17 07:47:19,869 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e5be584/80798f447ebd4df79422bebf23e70567 [2024-11-17 07:47:19,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:47:19,873 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:47:19,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:47:19,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:47:19,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:47:19,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:47:19" (1/1) ... [2024-11-17 07:47:19,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26214e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:19, skipping insertion in model container [2024-11-17 07:47:19,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:47:19" (1/1) ... [2024-11-17 07:47:19,932 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:47:20,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:47:20,483 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:47:20,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:47:20,611 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:47:20,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20 WrapperNode [2024-11-17 07:47:20,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:47:20,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:47:20,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:47:20,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:47:20,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,642 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,681 INFO L138 Inliner]: procedures = 271, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 147 [2024-11-17 07:47:20,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:47:20,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:47:20,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:47:20,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:47:20,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,744 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 07:47:20,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,757 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:47:20,778 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:47:20,778 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:47:20,779 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:47:20,780 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:47:20,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:20,814 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 07:47:20,819 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 07:47:20,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 07:47:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 07:47:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:47:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:47:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:47:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:47:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:47:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:47:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:47:20,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:47:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:47:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:47:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:47:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 07:47:20,871 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 07:47:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:47:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:47:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:47:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:47:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:47:20,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:47:20,875 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 07:47:21,043 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:47:21,046 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:47:21,266 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L945: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 07:47:21,267 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 07:47:21,325 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:47:21,326 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:47:21,600 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:47:21,602 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:47:21,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:47:21 BoogieIcfgContainer [2024-11-17 07:47:21,603 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:47:21,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:47:21,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:47:21,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:47:21,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:47:19" (1/3) ... [2024-11-17 07:47:21,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1944896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:47:21, skipping insertion in model container [2024-11-17 07:47:21,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (2/3) ... [2024-11-17 07:47:21,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1944896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:47:21, skipping insertion in model container [2024-11-17 07:47:21,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:47:21" (3/3) ... [2024-11-17 07:47:21,615 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2024-11-17 07:47:21,634 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:47:21,635 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-17 07:47:21,635 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:47:21,693 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 07:47:21,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 80 transitions, 167 flow [2024-11-17 07:47:21,792 INFO L124 PetriNetUnfolderBase]: 21/113 cut-off events. [2024-11-17 07:47:21,793 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:47:21,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 113 events. 21/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 354 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 71. Up to 6 conditions per place. [2024-11-17 07:47:21,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 80 transitions, 167 flow [2024-11-17 07:47:21,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 79 transitions, 165 flow [2024-11-17 07:47:21,816 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:47:21,826 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;@513f3fb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:47:21,826 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-17 07:47:21,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:47:21,840 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-17 07:47:21,840 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:47:21,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:21,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:47:21,842 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-17 07:47:21,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:21,849 INFO L85 PathProgramCache]: Analyzing trace with hash 523281989, now seen corresponding path program 1 times [2024-11-17 07:47:21,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:21,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989807005] [2024-11-17 07:47:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:21,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:22,304 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 07:47:22,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:22,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989807005] [2024-11-17 07:47:22,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989807005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:22,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:22,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:22,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276486831] [2024-11-17 07:47:22,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:22,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:22,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:22,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:22,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:22,368 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 80 [2024-11-17 07:47:22,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:47:22,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:22,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 80 [2024-11-17 07:47:22,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:22,683 INFO L124 PetriNetUnfolderBase]: 196/605 cut-off events. [2024-11-17 07:47:22,687 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:47:22,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 605 events. 196/605 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3475 event pairs, 118 based on Foata normal form. 156/705 useless extension candidates. Maximal degree in co-relation 963. Up to 337 conditions per place. [2024-11-17 07:47:22,697 INFO L140 encePairwiseOnDemand]: 64/80 looper letters, 48 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-11-17 07:47:22,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 289 flow [2024-11-17 07:47:22,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-17 07:47:22,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.728125 [2024-11-17 07:47:22,715 INFO L175 Difference]: Start difference. First operand has 69 places, 79 transitions, 165 flow. Second operand 4 states and 233 transitions. [2024-11-17 07:47:22,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 289 flow [2024-11-17 07:47:22,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:47:22,723 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 151 flow [2024-11-17 07:47:22,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-11-17 07:47:22,732 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2024-11-17 07:47:22,733 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 151 flow [2024-11-17 07:47:22,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:47:22,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:22,733 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:22,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:47:22,734 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-17 07:47:22,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:22,735 INFO L85 PathProgramCache]: Analyzing trace with hash 788044493, now seen corresponding path program 1 times [2024-11-17 07:47:22,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:22,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895909485] [2024-11-17 07:47:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:22,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:22,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:47:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:22,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:47:22,861 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:47:22,863 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-17 07:47:22,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-11-17 07:47:22,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-11-17 07:47:22,866 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-11-17 07:47:22,866 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-11-17 07:47:22,866 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-11-17 07:47:22,866 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-11-17 07:47:22,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-11-17 07:47:22,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-11-17 07:47:22,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-11-17 07:47:22,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-11-17 07:47:22,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-11-17 07:47:22,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-11-17 07:47:22,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-11-17 07:47:22,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-11-17 07:47:22,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:47:22,870 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 07:47:22,872 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:47:22,873 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 07:47:22,917 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:47:22,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 115 transitions, 246 flow [2024-11-17 07:47:22,951 INFO L124 PetriNetUnfolderBase]: 37/203 cut-off events. [2024-11-17 07:47:22,952 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 07:47:22,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 203 events. 37/203 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 774 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 121. Up to 9 conditions per place. [2024-11-17 07:47:22,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 115 transitions, 246 flow [2024-11-17 07:47:22,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 115 transitions, 246 flow [2024-11-17 07:47:22,961 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:47:22,962 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;@513f3fb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:47:22,963 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-17 07:47:22,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:47:22,966 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 07:47:22,966 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:47:22,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:22,966 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:47:22,966 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:47:22,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash -369556154, now seen corresponding path program 1 times [2024-11-17 07:47:22,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:22,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628439094] [2024-11-17 07:47:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:22,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:23,087 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 07:47:23,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:23,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628439094] [2024-11-17 07:47:23,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628439094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:23,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:23,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:23,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597220967] [2024-11-17 07:47:23,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:23,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:23,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:23,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:23,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:23,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2024-11-17 07:47:23,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 115 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 07:47:23,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:23,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2024-11-17 07:47:23,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:24,380 INFO L124 PetriNetUnfolderBase]: 4994/11059 cut-off events. [2024-11-17 07:47:24,381 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-17 07:47:24,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18671 conditions, 11059 events. 4994/11059 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 99889 event pairs, 2084 based on Foata normal form. 3168/13130 useless extension candidates. Maximal degree in co-relation 1488. Up to 7508 conditions per place. [2024-11-17 07:47:24,472 INFO L140 encePairwiseOnDemand]: 93/115 looper letters, 66 selfloop transitions, 3 changer transitions 0/124 dead transitions. [2024-11-17 07:47:24,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 124 transitions, 402 flow [2024-11-17 07:47:24,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:24,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2024-11-17 07:47:24,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6978260869565217 [2024-11-17 07:47:24,479 INFO L175 Difference]: Start difference. First operand has 99 places, 115 transitions, 246 flow. Second operand 4 states and 321 transitions. [2024-11-17 07:47:24,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 124 transitions, 402 flow [2024-11-17 07:47:24,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 124 transitions, 402 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:47:24,486 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 238 flow [2024-11-17 07:47:24,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2024-11-17 07:47:24,487 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 5 predicate places. [2024-11-17 07:47:24,487 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 238 flow [2024-11-17 07:47:24,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 07:47:24,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:24,489 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:24,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:47:24,489 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:47:24,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:24,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1471220574, now seen corresponding path program 1 times [2024-11-17 07:47:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:24,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152076143] [2024-11-17 07:47:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:24,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:24,623 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 07:47:24,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152076143] [2024-11-17 07:47:24,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152076143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312534373] [2024-11-17 07:47:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:24,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:24,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:24,627 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 07:47:24,628 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 07:47:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:24,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:47:24,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:24,840 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 07:47:24,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:47:24,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312534373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:24,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:47:24,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:47:24,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379164147] [2024-11-17 07:47:24,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:24,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:47:24,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:24,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:47:24,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:47:24,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2024-11-17 07:47:24,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 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 07:47:24,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:24,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2024-11-17 07:47:24,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:25,999 INFO L124 PetriNetUnfolderBase]: 4232/9933 cut-off events. [2024-11-17 07:47:25,999 INFO L125 PetriNetUnfolderBase]: For 634/634 co-relation queries the response was YES. [2024-11-17 07:47:26,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16955 conditions, 9933 events. 4232/9933 cut-off events. For 634/634 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 89992 event pairs, 872 based on Foata normal form. 144/8908 useless extension candidates. Maximal degree in co-relation 15369. Up to 3893 conditions per place. [2024-11-17 07:47:26,066 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 106 selfloop transitions, 6 changer transitions 0/167 dead transitions. [2024-11-17 07:47:26,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 167 transitions, 592 flow [2024-11-17 07:47:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:47:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:47:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 443 transitions. [2024-11-17 07:47:26,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6420289855072464 [2024-11-17 07:47:26,069 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 238 flow. Second operand 6 states and 443 transitions. [2024-11-17 07:47:26,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 167 transitions, 592 flow [2024-11-17 07:47:26,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 167 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:47:26,078 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 244 flow [2024-11-17 07:47:26,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2024-11-17 07:47:26,081 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 8 predicate places. [2024-11-17 07:47:26,082 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 244 flow [2024-11-17 07:47:26,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 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 07:47:26,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:26,082 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:26,105 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 07:47:26,283 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 07:47:26,287 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:47:26,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash -511724669, now seen corresponding path program 1 times [2024-11-17 07:47:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:26,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107137128] [2024-11-17 07:47:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:26,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:26,380 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 07:47:26,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:26,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107137128] [2024-11-17 07:47:26,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107137128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:26,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:26,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:26,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430979752] [2024-11-17 07:47:26,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:26,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:26,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:26,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 115 [2024-11-17 07:47:26,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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 07:47:26,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:26,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 115 [2024-11-17 07:47:26,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:27,942 INFO L124 PetriNetUnfolderBase]: 6314/13615 cut-off events. [2024-11-17 07:47:27,943 INFO L125 PetriNetUnfolderBase]: For 829/990 co-relation queries the response was YES. [2024-11-17 07:47:27,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23901 conditions, 13615 events. 6314/13615 cut-off events. For 829/990 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 124259 event pairs, 1497 based on Foata normal form. 223/13013 useless extension candidates. Maximal degree in co-relation 19173. Up to 6459 conditions per place. [2024-11-17 07:47:28,013 INFO L140 encePairwiseOnDemand]: 106/115 looper letters, 122 selfloop transitions, 12 changer transitions 0/191 dead transitions. [2024-11-17 07:47:28,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 191 transitions, 742 flow [2024-11-17 07:47:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:47:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:47:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 420 transitions. [2024-11-17 07:47:28,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7304347826086957 [2024-11-17 07:47:28,019 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 244 flow. Second operand 5 states and 420 transitions. [2024-11-17 07:47:28,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 191 transitions, 742 flow [2024-11-17 07:47:28,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 191 transitions, 731 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:47:28,026 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 332 flow [2024-11-17 07:47:28,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2024-11-17 07:47:28,027 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 13 predicate places. [2024-11-17 07:47:28,028 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 332 flow [2024-11-17 07:47:28,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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 07:47:28,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:28,028 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:47:28,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:47:28,029 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:47:28,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1636801941, now seen corresponding path program 1 times [2024-11-17 07:47:28,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:28,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061419322] [2024-11-17 07:47:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:28,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:28,103 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 07:47:28,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:28,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061419322] [2024-11-17 07:47:28,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061419322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:28,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:28,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:47:28,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184146655] [2024-11-17 07:47:28,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:28,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:28,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:28,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:28,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:28,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2024-11-17 07:47:28,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:47:28,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:28,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2024-11-17 07:47:28,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:29,436 INFO L124 PetriNetUnfolderBase]: 5644/13669 cut-off events. [2024-11-17 07:47:29,437 INFO L125 PetriNetUnfolderBase]: For 4264/4268 co-relation queries the response was YES. [2024-11-17 07:47:29,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25891 conditions, 13669 events. 5644/13669 cut-off events. For 4264/4268 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 131389 event pairs, 511 based on Foata normal form. 152/12626 useless extension candidates. Maximal degree in co-relation 22303. Up to 7529 conditions per place. [2024-11-17 07:47:29,523 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 104 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2024-11-17 07:47:29,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 165 transitions, 722 flow [2024-11-17 07:47:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2024-11-17 07:47:29,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2024-11-17 07:47:29,526 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 332 flow. Second operand 4 states and 308 transitions. [2024-11-17 07:47:29,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 165 transitions, 722 flow [2024-11-17 07:47:29,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 165 transitions, 718 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:47:29,540 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 344 flow [2024-11-17 07:47:29,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2024-11-17 07:47:29,543 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 15 predicate places. [2024-11-17 07:47:29,543 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 344 flow [2024-11-17 07:47:29,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:47:29,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:29,543 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:29,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:47:29,544 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:47:29,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:29,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1640298217, now seen corresponding path program 1 times [2024-11-17 07:47:29,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:29,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084108027] [2024-11-17 07:47:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:29,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:29,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:29,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084108027] [2024-11-17 07:47:29,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084108027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:29,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195427502] [2024-11-17 07:47:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:29,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:29,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:29,631 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 07:47:29,633 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 07:47:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:29,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 07:47:29,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:47:29,794 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:47:29,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195427502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:29,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:47:29,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-17 07:47:29,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106342406] [2024-11-17 07:47:29,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:29,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:47:29,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:29,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:47:29,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:47:29,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 115 [2024-11-17 07:47:29,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 07:47:29,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:29,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 115 [2024-11-17 07:47:29,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:30,957 INFO L124 PetriNetUnfolderBase]: 6279/13737 cut-off events. [2024-11-17 07:47:30,957 INFO L125 PetriNetUnfolderBase]: For 5108/5148 co-relation queries the response was YES. [2024-11-17 07:47:30,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27275 conditions, 13737 events. 6279/13737 cut-off events. For 5108/5148 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 124987 event pairs, 4670 based on Foata normal form. 169/13241 useless extension candidates. Maximal degree in co-relation 23412. Up to 8803 conditions per place. [2024-11-17 07:47:31,030 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 86 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-11-17 07:47:31,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 141 transitions, 628 flow [2024-11-17 07:47:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:47:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:47:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2024-11-17 07:47:31,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.663768115942029 [2024-11-17 07:47:31,032 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 344 flow. Second operand 3 states and 229 transitions. [2024-11-17 07:47:31,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 141 transitions, 628 flow [2024-11-17 07:47:31,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 141 transitions, 620 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:47:31,041 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 338 flow [2024-11-17 07:47:31,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-11-17 07:47:31,042 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 14 predicate places. [2024-11-17 07:47:31,042 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 338 flow [2024-11-17 07:47:31,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 07:47:31,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:31,043 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:31,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:47:31,243 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,SelfDestructingSolverStorable6 [2024-11-17 07:47:31,245 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:47:31,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:31,245 INFO L85 PathProgramCache]: Analyzing trace with hash 690363357, now seen corresponding path program 1 times [2024-11-17 07:47:31,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:31,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113417510] [2024-11-17 07:47:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:31,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:31,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113417510] [2024-11-17 07:47:31,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113417510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:31,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551155009] [2024-11-17 07:47:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:31,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:31,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:31,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:47:31,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:47:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:31,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 07:47:31,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:47:31,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:47:31,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551155009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:31,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:47:31,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-11-17 07:47:31,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860680111] [2024-11-17 07:47:31,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:31,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:47:31,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:31,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:47:31,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:47:31,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 115 [2024-11-17 07:47:31,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 07:47:31,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:31,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 115 [2024-11-17 07:47:31,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:33,372 INFO L124 PetriNetUnfolderBase]: 10673/23605 cut-off events. [2024-11-17 07:47:33,372 INFO L125 PetriNetUnfolderBase]: For 7474/7515 co-relation queries the response was YES. [2024-11-17 07:47:33,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46304 conditions, 23605 events. 10673/23605 cut-off events. For 7474/7515 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 235632 event pairs, 5168 based on Foata normal form. 177/22981 useless extension candidates. Maximal degree in co-relation 42364. Up to 9158 conditions per place. [2024-11-17 07:47:33,499 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 99 selfloop transitions, 4 changer transitions 0/156 dead transitions. [2024-11-17 07:47:33,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 156 transitions, 704 flow [2024-11-17 07:47:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:47:33,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:47:33,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-11-17 07:47:33,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7014492753623188 [2024-11-17 07:47:33,501 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 338 flow. Second operand 3 states and 242 transitions. [2024-11-17 07:47:33,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 156 transitions, 704 flow [2024-11-17 07:47:33,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 156 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:47:33,720 INFO L231 Difference]: Finished difference. Result has 115 places, 113 transitions, 364 flow [2024-11-17 07:47:33,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=115, PETRI_TRANSITIONS=113} [2024-11-17 07:47:33,721 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 16 predicate places. [2024-11-17 07:47:33,721 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 113 transitions, 364 flow [2024-11-17 07:47:33,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 07:47:33,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:33,721 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:33,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:47:33,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:33,922 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:47:33,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:33,923 INFO L85 PathProgramCache]: Analyzing trace with hash -74126812, now seen corresponding path program 1 times [2024-11-17 07:47:33,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:33,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544929155] [2024-11-17 07:47:33,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:33,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:34,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:34,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544929155] [2024-11-17 07:47:34,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544929155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:34,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433756022] [2024-11-17 07:47:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:34,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:34,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:34,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:47:34,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:47:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:34,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:47:34,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:34,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:47:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:34,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433756022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:47:34,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:47:34,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-17 07:47:34,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687631380] [2024-11-17 07:47:34,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:47:34,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:47:34,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:34,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:47:34,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:47:34,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2024-11-17 07:47:34,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 364 flow. Second operand has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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 07:47:34,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:34,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2024-11-17 07:47:34,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:34,614 INFO L124 PetriNetUnfolderBase]: 1021/2458 cut-off events. [2024-11-17 07:47:34,614 INFO L125 PetriNetUnfolderBase]: For 2070/2072 co-relation queries the response was YES. [2024-11-17 07:47:34,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5520 conditions, 2458 events. 1021/2458 cut-off events. For 2070/2072 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 17451 event pairs, 140 based on Foata normal form. 172/2565 useless extension candidates. Maximal degree in co-relation 5508. Up to 886 conditions per place. [2024-11-17 07:47:34,627 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 108 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2024-11-17 07:47:34,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 148 transitions, 685 flow [2024-11-17 07:47:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:47:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:47:34,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 485 transitions. [2024-11-17 07:47:34,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6024844720496895 [2024-11-17 07:47:34,630 INFO L175 Difference]: Start difference. First operand has 115 places, 113 transitions, 364 flow. Second operand 7 states and 485 transitions. [2024-11-17 07:47:34,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 148 transitions, 685 flow [2024-11-17 07:47:34,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 148 transitions, 669 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 07:47:34,637 INFO L231 Difference]: Finished difference. Result has 89 places, 71 transitions, 221 flow [2024-11-17 07:47:34,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=89, PETRI_TRANSITIONS=71} [2024-11-17 07:47:34,639 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -10 predicate places. [2024-11-17 07:47:34,639 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 71 transitions, 221 flow [2024-11-17 07:47:34,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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 07:47:34,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:34,640 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 07:47:34,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 07:47:34,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:34,841 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:47:34,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:34,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1202401209, now seen corresponding path program 1 times [2024-11-17 07:47:34,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:34,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698347974] [2024-11-17 07:47:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:34,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:34,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:47:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:34,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:47:34,890 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:47:34,890 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-11-17 07:47:34,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-11-17 07:47:34,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-11-17 07:47:34,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-11-17 07:47:34,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-11-17 07:47:34,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-11-17 07:47:34,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-11-17 07:47:34,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-11-17 07:47:34,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-11-17 07:47:34,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-11-17 07:47:34,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-11-17 07:47:34,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-11-17 07:47:34,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-11-17 07:47:34,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-11-17 07:47:34,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-11-17 07:47:34,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-11-17 07:47:34,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-11-17 07:47:34,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-11-17 07:47:34,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-11-17 07:47:34,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:47:34,892 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:34,893 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:47:34,893 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 07:47:34,919 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:47:34,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 150 transitions, 327 flow [2024-11-17 07:47:34,940 INFO L124 PetriNetUnfolderBase]: 58/318 cut-off events. [2024-11-17 07:47:34,941 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 07:47:34,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 318 events. 58/318 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1316 event pairs, 1 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 218. Up to 16 conditions per place. [2024-11-17 07:47:34,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 150 transitions, 327 flow [2024-11-17 07:47:34,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 150 transitions, 327 flow [2024-11-17 07:47:34,946 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:47:34,947 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;@513f3fb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:47:34,947 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-17 07:47:34,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:47:34,950 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 07:47:34,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:47:34,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:34,950 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:47:34,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-17 07:47:34,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash -226973337, now seen corresponding path program 1 times [2024-11-17 07:47:34,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:34,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139744868] [2024-11-17 07:47:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:34,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:35,000 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 07:47:35,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:35,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139744868] [2024-11-17 07:47:35,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139744868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:35,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:35,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:35,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533432322] [2024-11-17 07:47:35,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:35,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:35,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:35,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:35,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:35,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 150 [2024-11-17 07:47:35,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 150 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 07:47:35,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:35,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 150 [2024-11-17 07:47:35,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:47,716 INFO L124 PetriNetUnfolderBase]: 93723/168473 cut-off events. [2024-11-17 07:47:47,716 INFO L125 PetriNetUnfolderBase]: For 1717/1717 co-relation queries the response was YES. [2024-11-17 07:47:48,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296679 conditions, 168473 events. 93723/168473 cut-off events. For 1717/1717 co-relation queries the response was YES. Maximal size of possible extension queue 3905. Compared 1804087 event pairs, 83355 based on Foata normal form. 56211/212628 useless extension candidates. Maximal degree in co-relation 151815. Up to 127044 conditions per place. [2024-11-17 07:47:49,037 INFO L140 encePairwiseOnDemand]: 122/150 looper letters, 79 selfloop transitions, 3 changer transitions 0/153 dead transitions. [2024-11-17 07:47:49,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 153 transitions, 497 flow [2024-11-17 07:47:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2024-11-17 07:47:49,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-11-17 07:47:49,040 INFO L175 Difference]: Start difference. First operand has 129 places, 150 transitions, 327 flow. Second operand 4 states and 404 transitions. [2024-11-17 07:47:49,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 153 transitions, 497 flow [2024-11-17 07:47:49,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 153 transitions, 497 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:47:49,047 INFO L231 Difference]: Finished difference. Result has 134 places, 130 transitions, 307 flow [2024-11-17 07:47:49,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=134, PETRI_TRANSITIONS=130} [2024-11-17 07:47:49,048 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 5 predicate places. [2024-11-17 07:47:49,048 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 130 transitions, 307 flow [2024-11-17 07:47:49,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 07:47:49,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:49,049 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:49,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 07:47:49,049 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-17 07:47:49,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:49,049 INFO L85 PathProgramCache]: Analyzing trace with hash 487782112, now seen corresponding path program 1 times [2024-11-17 07:47:49,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:49,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237756765] [2024-11-17 07:47:49,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:49,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:49,142 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 07:47:49,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:49,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237756765] [2024-11-17 07:47:49,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237756765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:49,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092145489] [2024-11-17 07:47:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:49,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:49,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:49,145 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:47:49,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:47:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:49,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:47:49,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:49,347 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 07:47:49,347 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:47:49,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092145489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:49,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:47:49,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:47:49,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956182427] [2024-11-17 07:47:49,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:49,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:47:49,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:49,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:47:49,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:47:49,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 150 [2024-11-17 07:47:49,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 130 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 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 07:47:49,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:49,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 150 [2024-11-17 07:47:49,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:00,120 INFO L124 PetriNetUnfolderBase]: 76961/149568 cut-off events. [2024-11-17 07:48:00,121 INFO L125 PetriNetUnfolderBase]: For 8881/8881 co-relation queries the response was YES. [2024-11-17 07:48:00,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261097 conditions, 149568 events. 76961/149568 cut-off events. For 8881/8881 co-relation queries the response was YES. Maximal size of possible extension queue 3328. Compared 1703657 event pairs, 10896 based on Foata normal form. 1872/136987 useless extension candidates. Maximal degree in co-relation 22099. Up to 63134 conditions per place. [2024-11-17 07:48:00,897 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 141 selfloop transitions, 6 changer transitions 0/218 dead transitions. [2024-11-17 07:48:00,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 218 transitions, 775 flow [2024-11-17 07:48:00,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:48:00,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:48:00,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 574 transitions. [2024-11-17 07:48:00,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6377777777777778 [2024-11-17 07:48:00,899 INFO L175 Difference]: Start difference. First operand has 134 places, 130 transitions, 307 flow. Second operand 6 states and 574 transitions. [2024-11-17 07:48:00,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 218 transitions, 775 flow [2024-11-17 07:48:00,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 218 transitions, 773 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:48:00,909 INFO L231 Difference]: Finished difference. Result has 137 places, 129 transitions, 313 flow [2024-11-17 07:48:00,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=137, PETRI_TRANSITIONS=129} [2024-11-17 07:48:00,910 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2024-11-17 07:48:00,910 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 129 transitions, 313 flow [2024-11-17 07:48:00,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 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 07:48:00,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:00,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:00,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:48:01,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-17 07:48:01,113 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-17 07:48:01,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:01,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2035620828, now seen corresponding path program 1 times [2024-11-17 07:48:01,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:01,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981856127] [2024-11-17 07:48:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:01,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:01,169 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 07:48:01,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:01,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981856127] [2024-11-17 07:48:01,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981856127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:01,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:01,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:01,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155388335] [2024-11-17 07:48:01,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:01,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:01,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:01,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 150 [2024-11-17 07:48:01,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 129 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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 07:48:01,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:01,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 150 [2024-11-17 07:48:01,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand