./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-lit/sssc12_variant.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/pthread-lit/sssc12_variant.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 0ff08c0361e0fdb1af5d85b333c023f31932563eeba591605f3b3b9ddd16afc8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:42:48,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:42:48,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:42:48,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:42:48,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:42:48,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:42:48,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:42:48,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:42:48,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:42:48,944 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:42:48,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:42:48,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:42:48,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:42:48,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:42:48,947 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:42:48,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:42:48,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:42:48,950 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:42:48,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:42:48,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:42:48,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:42:48,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:42:48,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:42:48,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:42:48,956 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:42:48,956 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:42:48,956 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:42:48,956 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:42:48,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:42:48,957 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:42:48,957 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:42:48,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:42:48,957 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:42:48,957 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:42:48,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:42:48,958 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:42:48,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:42:48,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:42:48,958 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:42:48,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:42:48,959 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:42:48,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:42:48,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:42:48,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:42:48,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ff08c0361e0fdb1af5d85b333c023f31932563eeba591605f3b3b9ddd16afc8 [2024-11-17 07:42:49,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:42:49,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:42:49,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:42:49,331 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:42:49,331 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:42:49,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/sssc12_variant.i [2024-11-17 07:42:50,714 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:42:50,951 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:42:50,952 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/sssc12_variant.i [2024-11-17 07:42:50,967 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ba053520/e7b071e0b7f04ef39d46875a67b8cf35/FLAG4ea1150bd [2024-11-17 07:42:51,285 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ba053520/e7b071e0b7f04ef39d46875a67b8cf35 [2024-11-17 07:42:51,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:42:51,289 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:42:51,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:42:51,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:42:51,296 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:42:51,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c74b0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51, skipping insertion in model container [2024-11-17 07:42:51,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,338 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:42:51,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:42:51,739 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:42:51,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:42:51,839 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:42:51,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51 WrapperNode [2024-11-17 07:42:51,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:42:51,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:42:51,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:42:51,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:42:51,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,903 INFO L138 Inliner]: procedures = 272, calls = 22, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 83 [2024-11-17 07:42:51,903 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:42:51,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:42:51,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:42:51,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:42:51,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,916 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,929 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-11-17 07:42:51,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,938 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:42:51,950 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:42:51,950 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:42:51,950 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:42:51,951 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (1/1) ... [2024-11-17 07:42:51,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:42:51,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:42:51,983 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 07:42:51,986 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 07:42:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2024-11-17 07:42:52,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2024-11-17 07:42:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:42:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:42:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:42:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:42:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:42:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:42:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:42:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:42:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:42:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:42:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:42:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:42:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:42:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:42:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:42:52,040 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 07:42:52,170 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:42:52,173 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:42:52,408 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:42:52,408 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:42:52,569 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:42:52,570 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:42:52,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:42:52 BoogieIcfgContainer [2024-11-17 07:42:52,570 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:42:52,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:42:52,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:42:52,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:42:52,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:42:51" (1/3) ... [2024-11-17 07:42:52,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7785d4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:42:52, skipping insertion in model container [2024-11-17 07:42:52,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:42:51" (2/3) ... [2024-11-17 07:42:52,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7785d4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:42:52, skipping insertion in model container [2024-11-17 07:42:52,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:42:52" (3/3) ... [2024-11-17 07:42:52,576 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12_variant.i [2024-11-17 07:42:52,596 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:42:52,603 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-17 07:42:52,603 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:42:52,655 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:42:52,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 33 transitions, 70 flow [2024-11-17 07:42:52,726 INFO L124 PetriNetUnfolderBase]: 5/38 cut-off events. [2024-11-17 07:42:52,726 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:42:52,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 5/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 4 conditions per place. [2024-11-17 07:42:52,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 33 transitions, 70 flow [2024-11-17 07:42:52,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 33 transitions, 70 flow [2024-11-17 07:42:52,746 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:42:52,755 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;@38fcbc9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:42:52,757 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-17 07:42:52,763 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:42:52,767 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-17 07:42:52,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:42:52,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:42:52,768 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:42:52,768 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:42:52,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:42:52,778 INFO L85 PathProgramCache]: Analyzing trace with hash -828022397, now seen corresponding path program 1 times [2024-11-17 07:42:52,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:42:52,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876483209] [2024-11-17 07:42:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:42:52,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:42:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:42:53,075 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 07:42:53,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:42:53,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876483209] [2024-11-17 07:42:53,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876483209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:42:53,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:42:53,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:42:53,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16879344] [2024-11-17 07:42:53,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:42:53,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:42:53,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:42:53,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:42:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:42:53,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2024-11-17 07:42:53,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 07:42:53,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:42:53,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2024-11-17 07:42:53,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:42:53,198 INFO L124 PetriNetUnfolderBase]: 26/115 cut-off events. [2024-11-17 07:42:53,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:42:53,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 115 events. 26/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 410 event pairs, 12 based on Foata normal form. 27/136 useless extension candidates. Maximal degree in co-relation 168. Up to 38 conditions per place. [2024-11-17 07:42:53,201 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 16 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2024-11-17 07:42:53,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 102 flow [2024-11-17 07:42:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:42:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:42:53,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-17 07:42:53,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6767676767676768 [2024-11-17 07:42:53,212 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 70 flow. Second operand 3 states and 67 transitions. [2024-11-17 07:42:53,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 102 flow [2024-11-17 07:42:53,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:42:53,217 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 58 flow [2024-11-17 07:42:53,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2024-11-17 07:42:53,222 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2024-11-17 07:42:53,222 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 58 flow [2024-11-17 07:42:53,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 07:42:53,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:42:53,223 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:42:53,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:42:53,223 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:42:53,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:42:53,224 INFO L85 PathProgramCache]: Analyzing trace with hash -828252583, now seen corresponding path program 1 times [2024-11-17 07:42:53,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:42:53,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135481895] [2024-11-17 07:42:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:42:53,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:42:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:42:53,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:42:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:42:53,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:42:53,278 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:42:53,279 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-17 07:42:53,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-17 07:42:53,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-17 07:42:53,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-17 07:42:53,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-17 07:42:53,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-17 07:42:53,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-17 07:42:53,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-17 07:42:53,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-17 07:42:53,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-17 07:42:53,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-17 07:42:53,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-17 07:42:53,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-17 07:42:53,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:42:53,285 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 07:42:53,288 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:42:53,289 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 07:42:53,318 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:42:53,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 58 transitions, 126 flow [2024-11-17 07:42:53,338 INFO L124 PetriNetUnfolderBase]: 9/69 cut-off events. [2024-11-17 07:42:53,338 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:42:53,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 69 events. 9/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 168 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 54. Up to 6 conditions per place. [2024-11-17 07:42:53,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 58 transitions, 126 flow [2024-11-17 07:42:53,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 58 transitions, 126 flow [2024-11-17 07:42:53,342 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:42:53,344 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;@38fcbc9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:42:53,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-17 07:42:53,349 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:42:53,351 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-17 07:42:53,352 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:42:53,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:42:53,352 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:42:53,352 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:42:53,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:42:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1149888357, now seen corresponding path program 1 times [2024-11-17 07:42:53,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:42:53,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924543843] [2024-11-17 07:42:53,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:42:53,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:42:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:42:53,401 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 07:42:53,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:42:53,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924543843] [2024-11-17 07:42:53,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924543843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:42:53,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:42:53,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:42:53,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644850778] [2024-11-17 07:42:53,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:42:53,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:42:53,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:42:53,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:42:53,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:42:53,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 58 [2024-11-17 07:42:53,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 07:42:53,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:42:53,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 58 [2024-11-17 07:42:53,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:42:53,660 INFO L124 PetriNetUnfolderBase]: 893/2003 cut-off events. [2024-11-17 07:42:53,660 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-17 07:42:53,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3417 conditions, 2003 events. 893/2003 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14327 event pairs, 328 based on Foata normal form. 491/2332 useless extension candidates. Maximal degree in co-relation 1191. Up to 848 conditions per place. [2024-11-17 07:42:53,675 INFO L140 encePairwiseOnDemand]: 43/58 looper letters, 45 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-11-17 07:42:53,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 72 transitions, 255 flow [2024-11-17 07:42:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:42:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:42:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-17 07:42:53,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7816091954022989 [2024-11-17 07:42:53,678 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 126 flow. Second operand 3 states and 136 transitions. [2024-11-17 07:42:53,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 72 transitions, 255 flow [2024-11-17 07:42:53,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 72 transitions, 255 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:42:53,682 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 149 flow [2024-11-17 07:42:53,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-11-17 07:42:53,683 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2024-11-17 07:42:53,683 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 149 flow [2024-11-17 07:42:53,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 07:42:53,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:42:53,683 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-17 07:42:53,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:42:53,683 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:42:53,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:42:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash 290117372, now seen corresponding path program 1 times [2024-11-17 07:42:53,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:42:53,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143048170] [2024-11-17 07:42:53,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:42:53,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:42:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:42:53,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:42:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:42:53,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:42:53,722 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:42:53,722 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-11-17 07:42:53,722 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-11-17 07:42:53,722 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-11-17 07:42:53,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-11-17 07:42:53,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-11-17 07:42:53,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-11-17 07:42:53,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-11-17 07:42:53,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-11-17 07:42:53,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-11-17 07:42:53,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-11-17 07:42:53,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-11-17 07:42:53,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-11-17 07:42:53,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-11-17 07:42:53,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-11-17 07:42:53,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-11-17 07:42:53,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-11-17 07:42:53,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-11-17 07:42:53,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-11-17 07:42:53,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-11-17 07:42:53,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:42:53,728 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 07:42:53,728 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:42:53,728 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 07:42:53,752 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:42:53,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 83 transitions, 184 flow [2024-11-17 07:42:53,784 INFO L124 PetriNetUnfolderBase]: 13/100 cut-off events. [2024-11-17 07:42:53,784 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 07:42:53,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 100 events. 13/100 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 285 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 78. Up to 8 conditions per place. [2024-11-17 07:42:53,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 83 transitions, 184 flow [2024-11-17 07:42:53,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 83 transitions, 184 flow [2024-11-17 07:42:53,791 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:42:53,791 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;@38fcbc9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:42:53,791 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-17 07:42:53,796 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:42:53,796 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-17 07:42:53,800 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:42:53,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:42:53,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:42:53,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:42:53,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:42:53,801 INFO L85 PathProgramCache]: Analyzing trace with hash 599695411, now seen corresponding path program 1 times [2024-11-17 07:42:53,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:42:53,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603713085] [2024-11-17 07:42:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:42:53,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:42:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:42:53,905 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 07:42:53,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:42:53,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603713085] [2024-11-17 07:42:53,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603713085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:42:53,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:42:53,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:42:53,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391064342] [2024-11-17 07:42:53,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:42:53,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:42:53,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:42:53,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:42:53,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:42:53,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-11-17 07:42:53,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 07:42:53,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:42:53,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-11-17 07:42:53,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:42:56,271 INFO L124 PetriNetUnfolderBase]: 19357/32589 cut-off events. [2024-11-17 07:42:56,272 INFO L125 PetriNetUnfolderBase]: For 1049/1049 co-relation queries the response was YES. [2024-11-17 07:42:56,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59031 conditions, 32589 events. 19357/32589 cut-off events. For 1049/1049 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 286008 event pairs, 6099 based on Foata normal form. 7442/37340 useless extension candidates. Maximal degree in co-relation 7926. Up to 19700 conditions per place. [2024-11-17 07:42:56,489 INFO L140 encePairwiseOnDemand]: 62/83 looper letters, 66 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-17 07:42:56,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 105 transitions, 380 flow [2024-11-17 07:42:56,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:42:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:42:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2024-11-17 07:42:56,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7911646586345381 [2024-11-17 07:42:56,493 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 184 flow. Second operand 3 states and 197 transitions. [2024-11-17 07:42:56,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 105 transitions, 380 flow [2024-11-17 07:42:56,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 105 transitions, 376 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-17 07:42:56,499 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 218 flow [2024-11-17 07:42:56,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-11-17 07:42:56,500 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 1 predicate places. [2024-11-17 07:42:56,502 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 218 flow [2024-11-17 07:42:56,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 07:42:56,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:42:56,503 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:42:56,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:42:56,503 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:42:56,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:42:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1296325890, now seen corresponding path program 1 times [2024-11-17 07:42:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:42:56,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225438007] [2024-11-17 07:42:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:42:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:42:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:42:56,581 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 07:42:56,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:42:56,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225438007] [2024-11-17 07:42:56,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225438007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:42:56,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:42:56,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:42:56,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421168932] [2024-11-17 07:42:56,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:42:56,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:42:56,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:42:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:42:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:42:56,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 83 [2024-11-17 07:42:56,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 07:42:56,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:42:56,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 83 [2024-11-17 07:42:56,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:42:58,474 INFO L124 PetriNetUnfolderBase]: 14384/27706 cut-off events. [2024-11-17 07:42:58,475 INFO L125 PetriNetUnfolderBase]: For 1983/2998 co-relation queries the response was YES. [2024-11-17 07:42:58,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50619 conditions, 27706 events. 14384/27706 cut-off events. For 1983/2998 co-relation queries the response was YES. Maximal size of possible extension queue 1265. Compared 269271 event pairs, 6540 based on Foata normal form. 429/25686 useless extension candidates. Maximal degree in co-relation 23015. Up to 11466 conditions per place. [2024-11-17 07:42:58,642 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 57 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-11-17 07:42:58,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 104 transitions, 404 flow [2024-11-17 07:42:58,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:42:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:42:58,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2024-11-17 07:42:58,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7630522088353414 [2024-11-17 07:42:58,644 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 218 flow. Second operand 3 states and 190 transitions. [2024-11-17 07:42:58,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 104 transitions, 404 flow [2024-11-17 07:42:58,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 104 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:42:58,654 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 222 flow [2024-11-17 07:42:58,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2024-11-17 07:42:58,654 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 3 predicate places. [2024-11-17 07:42:58,655 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 222 flow [2024-11-17 07:42:58,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 07:42:58,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:42:58,655 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-17 07:42:58,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:42:58,655 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:42:58,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:42:58,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1140035632, now seen corresponding path program 1 times [2024-11-17 07:42:58,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:42:58,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627134894] [2024-11-17 07:42:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:42:58,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:42:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:42:58,670 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:42:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:42:58,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:42:58,679 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:42:58,679 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-11-17 07:42:58,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-11-17 07:42:58,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-11-17 07:42:58,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-11-17 07:42:58,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-11-17 07:42:58,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-11-17 07:42:58,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-11-17 07:42:58,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-11-17 07:42:58,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-11-17 07:42:58,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-11-17 07:42:58,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-11-17 07:42:58,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-11-17 07:42:58,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2024-11-17 07:42:58,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2024-11-17 07:42:58,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2024-11-17 07:42:58,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2024-11-17 07:42:58,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2024-11-17 07:42:58,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-11-17 07:42:58,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-11-17 07:42:58,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-11-17 07:42:58,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-11-17 07:42:58,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-11-17 07:42:58,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-11-17 07:42:58,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-11-17 07:42:58,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-11-17 07:42:58,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:42:58,682 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-17 07:42:58,683 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:42:58,683 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-17 07:42:58,718 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:42:58,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 108 transitions, 244 flow [2024-11-17 07:42:58,726 INFO L124 PetriNetUnfolderBase]: 17/131 cut-off events. [2024-11-17 07:42:58,726 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-17 07:42:58,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 131 events. 17/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 416 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 112. Up to 10 conditions per place. [2024-11-17 07:42:58,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 108 transitions, 244 flow [2024-11-17 07:42:58,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 108 transitions, 244 flow [2024-11-17 07:42:58,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:42:58,729 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;@38fcbc9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:42:58,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-17 07:42:58,730 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:42:58,730 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-17 07:42:58,730 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:42:58,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:42:58,730 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:42:58,731 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 07:42:58,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:42:58,731 INFO L85 PathProgramCache]: Analyzing trace with hash 127978059, now seen corresponding path program 1 times [2024-11-17 07:42:58,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:42:58,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496263470] [2024-11-17 07:42:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:42:58,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:42:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:42:58,759 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 07:42:58,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:42:58,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496263470] [2024-11-17 07:42:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496263470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:42:58,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:42:58,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:42:58,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515869332] [2024-11-17 07:42:58,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:42:58,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:42:58,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:42:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:42:58,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:42:58,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 108 [2024-11-17 07:42:58,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 108 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 07:42:58,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:42:58,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 108 [2024-11-17 07:42:58,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:43:35,745 INFO L124 PetriNetUnfolderBase]: 350199/510794 cut-off events. [2024-11-17 07:43:35,745 INFO L125 PetriNetUnfolderBase]: For 22656/22656 co-relation queries the response was YES. [2024-11-17 07:43:36,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956021 conditions, 510794 events. 350199/510794 cut-off events. For 22656/22656 co-relation queries the response was YES. Maximal size of possible extension queue 20885. Compared 4846950 event pairs, 99752 based on Foata normal form. 103989/574210 useless extension candidates. Maximal degree in co-relation 58976. Up to 371399 conditions per place. [2024-11-17 07:43:39,427 INFO L140 encePairwiseOnDemand]: 81/108 looper letters, 87 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2024-11-17 07:43:39,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 138 transitions, 509 flow [2024-11-17 07:43:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:43:39,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:43:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2024-11-17 07:43:39,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7962962962962963 [2024-11-17 07:43:39,430 INFO L175 Difference]: Start difference. First operand has 104 places, 108 transitions, 244 flow. Second operand 3 states and 258 transitions. [2024-11-17 07:43:39,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 138 transitions, 509 flow [2024-11-17 07:43:39,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 138 transitions, 497 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-17 07:43:39,467 INFO L231 Difference]: Finished difference. Result has 105 places, 105 transitions, 287 flow [2024-11-17 07:43:39,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=105, PETRI_TRANSITIONS=105} [2024-11-17 07:43:39,468 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 1 predicate places. [2024-11-17 07:43:39,468 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 105 transitions, 287 flow [2024-11-17 07:43:39,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 07:43:39,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:43:39,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:43:39,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:43:39,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 07:43:39,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:43:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash -895257134, now seen corresponding path program 1 times [2024-11-17 07:43:39,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:43:39,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977213092] [2024-11-17 07:43:39,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:43:39,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:43:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:43:39,516 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 07:43:39,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:43:39,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977213092] [2024-11-17 07:43:39,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977213092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:43:39,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:43:39,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:43:39,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966356631] [2024-11-17 07:43:39,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:43:39,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:43:39,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:43:39,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:43:39,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:43:39,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 108 [2024-11-17 07:43:39,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 105 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 07:43:39,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:43:39,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 108 [2024-11-17 07:43:39,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand