./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:42:43,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:42:43,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:42:43,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:42:43,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:42:43,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:42:43,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:42:43,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:42:43,868 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:42:43,868 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:42:43,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:42:43,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:42:43,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:42:43,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:42:43,870 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:42:43,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:42:43,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:42:43,870 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:42:43,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:42:43,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:42:43,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:42:43,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:42:43,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:42:43,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:42:43,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:42:43,874 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:42:43,874 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:42:43,878 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:42:43,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:42:43,878 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:42:43,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:42:43,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:42:43,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:42:43,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:42:43,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:42:43,879 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:42:43,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:42:43,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:42:43,880 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:42:43,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:42:43,880 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:42:43,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:42:43,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:42:43,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:42:43,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2024-10-13 16:42:44,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:42:44,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:42:44,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:42:44,095 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:42:44,095 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:42:44,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-10-13 16:42:45,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:42:45,573 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:42:45,573 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-10-13 16:42:45,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d101f1181/8589761293c24e37be601023a44769a2/FLAG295b3c62d [2024-10-13 16:42:45,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d101f1181/8589761293c24e37be601023a44769a2 [2024-10-13 16:42:45,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:42:45,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:42:45,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:42:45,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:42:45,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:42:45,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:42:45" (1/1) ... [2024-10-13 16:42:45,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35615a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:45, skipping insertion in model container [2024-10-13 16:42:45,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:42:45" (1/1) ... [2024-10-13 16:42:45,988 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:42:46,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:42:46,381 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:42:46,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:42:46,493 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:42:46,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46 WrapperNode [2024-10-13 16:42:46,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:42:46,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:42:46,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:42:46,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:42:46,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,543 INFO L138 Inliner]: procedures = 274, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 151 [2024-10-13 16:42:46,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:42:46,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:42:46,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:42:46,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:42:46,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,568 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-10-13 16:42:46,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,569 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,585 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:42:46,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:42:46,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:42:46,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:42:46,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (1/1) ... [2024-10-13 16:42:46,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:42:46,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:42:46,630 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) [2024-10-13 16:42:46,635 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 [2024-10-13 16:42:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 16:42:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 16:42:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:42:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:42:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:42:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 16:42:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 16:42:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 16:42:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:42:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:42:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 16:42:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 16:42:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 16:42:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:42:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:42:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 16:42:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 16:42:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:42:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:42:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 16:42:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 16:42:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 16:42:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:42:46,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:42:46,676 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:42:46,835 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:42:46,837 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:42:47,066 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:42:47,067 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:42:47,179 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:42:47,179 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-13 16:42:47,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:42:47 BoogieIcfgContainer [2024-10-13 16:42:47,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:42:47,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:42:47,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:42:47,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:42:47,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:42:45" (1/3) ... [2024-10-13 16:42:47,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a560fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:42:47, skipping insertion in model container [2024-10-13 16:42:47,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:46" (2/3) ... [2024-10-13 16:42:47,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a560fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:42:47, skipping insertion in model container [2024-10-13 16:42:47,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:42:47" (3/3) ... [2024-10-13 16:42:47,186 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2024-10-13 16:42:47,200 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:42:47,200 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-13 16:42:47,203 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:42:47,234 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 16:42:47,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 68 transitions, 143 flow [2024-10-13 16:42:47,287 INFO L124 PetriNetUnfolderBase]: 11/87 cut-off events. [2024-10-13 16:42:47,288 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:42:47,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 11/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 238 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2024-10-13 16:42:47,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 68 transitions, 143 flow [2024-10-13 16:42:47,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 67 transitions, 141 flow [2024-10-13 16:42:47,303 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:42:47,308 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;@5d0022d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:42:47,308 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-13 16:42:47,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:42:47,311 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-13 16:42:47,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:42:47,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:47,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:42:47,312 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:42:47,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash 376312350, now seen corresponding path program 1 times [2024-10-13 16:42:47,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:47,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686560300] [2024-10-13 16:42:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:47,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:47,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686560300] [2024-10-13 16:42:47,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686560300] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:47,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:47,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:42:47,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868218145] [2024-10-13 16:42:47,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:47,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:47,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:47,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:47,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:47,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 68 [2024-10-13 16:42:47,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-10-13 16:42:47,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:47,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 68 [2024-10-13 16:42:47,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:47,996 INFO L124 PetriNetUnfolderBase]: 240/694 cut-off events. [2024-10-13 16:42:47,996 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:42:47,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 694 events. 240/694 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3476 event pairs, 78 based on Foata normal form. 98/738 useless extension candidates. Maximal degree in co-relation 1185. Up to 464 conditions per place. [2024-10-13 16:42:48,005 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 64 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-10-13 16:42:48,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 321 flow [2024-10-13 16:42:48,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:42:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:42:48,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-10-13 16:42:48,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6691176470588235 [2024-10-13 16:42:48,020 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 141 flow. Second operand 4 states and 182 transitions. [2024-10-13 16:42:48,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 321 flow [2024-10-13 16:42:48,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 321 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:42:48,029 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 131 flow [2024-10-13 16:42:48,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-10-13 16:42:48,041 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-10-13 16:42:48,041 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 131 flow [2024-10-13 16:42:48,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-10-13 16:42:48,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:48,041 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:48,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:42:48,042 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:42:48,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash 856991885, now seen corresponding path program 1 times [2024-10-13 16:42:48,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:48,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811440421] [2024-10-13 16:42:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:48,067 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:42:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:48,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:42:48,105 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 16:42:48,106 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-13 16:42:48,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-13 16:42:48,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-13 16:42:48,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-13 16:42:48,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-13 16:42:48,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-13 16:42:48,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-13 16:42:48,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-13 16:42:48,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-13 16:42:48,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-13 16:42:48,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-13 16:42:48,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-13 16:42:48,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-13 16:42:48,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:42:48,112 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 16:42:48,114 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 16:42:48,114 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 16:42:48,141 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:42:48,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 105 transitions, 226 flow [2024-10-13 16:42:48,162 INFO L124 PetriNetUnfolderBase]: 21/162 cut-off events. [2024-10-13 16:42:48,163 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 16:42:48,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 162 events. 21/162 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 586 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2024-10-13 16:42:48,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 105 transitions, 226 flow [2024-10-13 16:42:48,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 105 transitions, 226 flow [2024-10-13 16:42:48,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:42:48,170 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;@5d0022d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:42:48,170 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-13 16:42:48,172 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:42:48,173 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-13 16:42:48,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:42:48,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:48,173 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:42:48,174 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:48,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:48,175 INFO L85 PathProgramCache]: Analyzing trace with hash 476548010, now seen corresponding path program 1 times [2024-10-13 16:42:48,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:48,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850157462] [2024-10-13 16:42:48,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:48,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:48,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:48,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850157462] [2024-10-13 16:42:48,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850157462] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:48,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:48,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:42:48,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806156649] [2024-10-13 16:42:48,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:48,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:48,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:48,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:48,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:48,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 105 [2024-10-13 16:42:48,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 105 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-10-13 16:42:48,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:48,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 105 [2024-10-13 16:42:48,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:49,913 INFO L124 PetriNetUnfolderBase]: 9858/19656 cut-off events. [2024-10-13 16:42:49,913 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-10-13 16:42:49,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35172 conditions, 19656 events. 9858/19656 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 167023 event pairs, 4688 based on Foata normal form. 2820/20855 useless extension candidates. Maximal degree in co-relation 2013. Up to 15372 conditions per place. [2024-10-13 16:42:50,094 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 87 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2024-10-13 16:42:50,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 126 transitions, 448 flow [2024-10-13 16:42:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:42:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:42:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2024-10-13 16:42:50,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261904761904762 [2024-10-13 16:42:50,098 INFO L175 Difference]: Start difference. First operand has 94 places, 105 transitions, 226 flow. Second operand 4 states and 263 transitions. [2024-10-13 16:42:50,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 126 transitions, 448 flow [2024-10-13 16:42:50,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 126 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:42:50,102 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 222 flow [2024-10-13 16:42:50,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-10-13 16:42:50,103 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2024-10-13 16:42:50,103 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 222 flow [2024-10-13 16:42:50,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-10-13 16:42:50,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:50,104 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:50,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:42:50,104 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:50,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash -42530406, now seen corresponding path program 1 times [2024-10-13 16:42:50,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:50,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849893311] [2024-10-13 16:42:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:50,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:50,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:50,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849893311] [2024-10-13 16:42:50,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849893311] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:42:50,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104589746] [2024-10-13 16:42:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:50,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:42:50,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:42:50,190 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) [2024-10-13 16:42:50,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:42:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:50,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:42:50,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:42:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:50,350 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:42:50,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104589746] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:50,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:42:50,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:42:50,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801381251] [2024-10-13 16:42:50,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:50,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:42:50,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:50,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:42:50,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:42:50,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 105 [2024-10-13 16:42:50,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 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) [2024-10-13 16:42:50,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:50,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 105 [2024-10-13 16:42:50,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:52,002 INFO L124 PetriNetUnfolderBase]: 9314/17174 cut-off events. [2024-10-13 16:42:52,002 INFO L125 PetriNetUnfolderBase]: For 1139/1139 co-relation queries the response was YES. [2024-10-13 16:42:52,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33102 conditions, 17174 events. 9314/17174 cut-off events. For 1139/1139 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 137241 event pairs, 527 based on Foata normal form. 289/16575 useless extension candidates. Maximal degree in co-relation 1950. Up to 10580 conditions per place. [2024-10-13 16:42:52,056 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 147 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2024-10-13 16:42:52,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 189 transitions, 718 flow [2024-10-13 16:42:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:42:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:42:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2024-10-13 16:42:52,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2024-10-13 16:42:52,058 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 222 flow. Second operand 6 states and 370 transitions. [2024-10-13 16:42:52,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 189 transitions, 718 flow [2024-10-13 16:42:52,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 189 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:42:52,062 INFO L231 Difference]: Finished difference. Result has 102 places, 92 transitions, 228 flow [2024-10-13 16:42:52,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=102, PETRI_TRANSITIONS=92} [2024-10-13 16:42:52,063 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2024-10-13 16:42:52,063 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 92 transitions, 228 flow [2024-10-13 16:42:52,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 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) [2024-10-13 16:42:52,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:52,064 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:42:52,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:42:52,264 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 [2024-10-13 16:42:52,265 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:52,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:52,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1318442062, now seen corresponding path program 1 times [2024-10-13 16:42:52,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:52,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308980672] [2024-10-13 16:42:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:42:52,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:52,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308980672] [2024-10-13 16:42:52,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308980672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:52,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:52,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:42:52,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455135427] [2024-10-13 16:42:52,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:52,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:52,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:52,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:52,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:52,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 105 [2024-10-13 16:42:52,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 92 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-10-13 16:42:52,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:52,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 105 [2024-10-13 16:42:52,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:53,461 INFO L124 PetriNetUnfolderBase]: 8770/16027 cut-off events. [2024-10-13 16:42:53,461 INFO L125 PetriNetUnfolderBase]: For 2254/2254 co-relation queries the response was YES. [2024-10-13 16:42:53,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31735 conditions, 16027 events. 8770/16027 cut-off events. For 2254/2254 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 124988 event pairs, 832 based on Foata normal form. 289/15841 useless extension candidates. Maximal degree in co-relation 23058. Up to 11446 conditions per place. [2024-10-13 16:42:53,534 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 114 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2024-10-13 16:42:53,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 156 transitions, 594 flow [2024-10-13 16:42:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:42:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:42:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2024-10-13 16:42:53,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261904761904762 [2024-10-13 16:42:53,539 INFO L175 Difference]: Start difference. First operand has 102 places, 92 transitions, 228 flow. Second operand 4 states and 263 transitions. [2024-10-13 16:42:53,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 156 transitions, 594 flow [2024-10-13 16:42:53,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 156 transitions, 578 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-10-13 16:42:53,572 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 228 flow [2024-10-13 16:42:53,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2024-10-13 16:42:53,574 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 6 predicate places. [2024-10-13 16:42:53,575 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 228 flow [2024-10-13 16:42:53,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-10-13 16:42:53,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:53,575 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-10-13 16:42:53,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:42:53,576 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:53,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:53,576 INFO L85 PathProgramCache]: Analyzing trace with hash -7452931, now seen corresponding path program 1 times [2024-10-13 16:42:53,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:53,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277977884] [2024-10-13 16:42:53,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:53,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:53,608 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:42:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:53,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:42:53,631 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 16:42:53,631 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-13 16:42:53,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-13 16:42:53,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-13 16:42:53,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-13 16:42:53,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-13 16:42:53,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-13 16:42:53,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-13 16:42:53,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-13 16:42:53,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-13 16:42:53,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-13 16:42:53,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-13 16:42:53,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-13 16:42:53,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-13 16:42:53,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-13 16:42:53,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-13 16:42:53,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-13 16:42:53,634 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-13 16:42:53,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:42:53,635 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-13 16:42:53,635 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 16:42:53,635 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 16:42:53,668 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:42:53,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 142 transitions, 311 flow [2024-10-13 16:42:53,694 INFO L124 PetriNetUnfolderBase]: 34/256 cut-off events. [2024-10-13 16:42:53,694 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 16:42:53,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 256 events. 34/256 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1062 event pairs, 1 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 177. Up to 12 conditions per place. [2024-10-13 16:42:53,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 142 transitions, 311 flow [2024-10-13 16:42:53,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 142 transitions, 311 flow [2024-10-13 16:42:53,698 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:42:53,699 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;@5d0022d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:42:53,699 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-13 16:42:53,701 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:42:53,701 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-13 16:42:53,701 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:42:53,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:53,701 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:42:53,701 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:42:53,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash 612092955, now seen corresponding path program 1 times [2024-10-13 16:42:53,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:53,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30383287] [2024-10-13 16:42:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:53,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:53,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:53,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30383287] [2024-10-13 16:42:53,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30383287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:53,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:53,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:42:53,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448132752] [2024-10-13 16:42:53,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:53,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:53,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:53,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:53,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:53,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2024-10-13 16:42:53,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 142 transitions, 311 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-10-13 16:42:53,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:53,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2024-10-13 16:42:53,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:25,918 INFO L124 PetriNetUnfolderBase]: 260231/450059 cut-off events. [2024-10-13 16:43:25,918 INFO L125 PetriNetUnfolderBase]: For 3357/3357 co-relation queries the response was YES. [2024-10-13 16:43:26,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809144 conditions, 450059 events. 260231/450059 cut-off events. For 3357/3357 co-relation queries the response was YES. Maximal size of possible extension queue 7432. Compared 4874586 event pairs, 170145 based on Foata normal form. 69821/485499 useless extension candidates. Maximal degree in co-relation 36510. Up to 356848 conditions per place.