./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.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 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:06:12,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:06:12,379 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:06:12,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:06:12,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:06:12,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:06:12,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:06:12,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:06:12,419 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:06:12,420 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:06:12,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:06:12,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:06:12,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:06:12,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:06:12,424 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:06:12,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:06:12,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:06:12,425 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:06:12,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:06:12,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:06:12,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:06:12,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:06:12,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:06:12,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:06:12,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:06:12,427 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:06:12,427 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:06:12,428 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:06:12,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:06:12,428 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:06:12,429 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:06:12,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:06:12,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:06:12,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:06:12,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:06:12,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:06:12,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:06:12,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:06:12,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:06:12,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:06:12,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:06:12,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:06:12,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:06:12,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:06:12,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2024-11-10 22:06:12,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:06:12,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:06:12,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:06:12,728 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:06:12,729 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:06:12,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-11-10 22:06:14,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:06:14,490 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:06:14,491 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-11-10 22:06:14,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7049e1a75/bf90d93160fa4f0bae0c1d08f110e816/FLAG78e523e2b [2024-11-10 22:06:14,768 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7049e1a75/bf90d93160fa4f0bae0c1d08f110e816 [2024-11-10 22:06:14,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:06:14,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:06:14,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:06:14,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:06:14,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:06:14,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:06:14" (1/1) ... [2024-11-10 22:06:14,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61099aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:14, skipping insertion in model container [2024-11-10 22:06:14,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:06:14" (1/1) ... [2024-11-10 22:06:14,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:06:15,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:06:15,235 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:06:15,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:06:15,337 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:06:15,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15 WrapperNode [2024-11-10 22:06:15,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:06:15,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:06:15,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:06:15,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:06:15,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,389 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 176 [2024-11-10 22:06:15,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:06:15,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:06:15,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:06:15,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:06:15,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,405 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,423 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 5, 3, 6]. 38 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0, 0]. The 5 writes are split as follows [0, 1, 2, 2]. [2024-11-10 22:06:15,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,432 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:06:15,444 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:06:15,444 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:06:15,444 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:06:15,445 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (1/1) ... [2024-11-10 22:06:15,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:06:15,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:06:15,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:06:15,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:06:15,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:06:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:06:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:06:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 22:06:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 22:06:15,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 22:06:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:06:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:06:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:06:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 22:06:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:06:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:06:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 22:06:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 22:06:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:06:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:06:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:06:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 22:06:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:06:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:06:15,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:06:15,548 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:06:15,720 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:06:15,722 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:06:15,997 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:06:16,000 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:06:16,531 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:06:16,531 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:06:16,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:06:16 BoogieIcfgContainer [2024-11-10 22:06:16,532 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:06:16,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:06:16,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:06:16,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:06:16,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:06:14" (1/3) ... [2024-11-10 22:06:16,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e06e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:06:16, skipping insertion in model container [2024-11-10 22:06:16,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:15" (2/3) ... [2024-11-10 22:06:16,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e06e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:06:16, skipping insertion in model container [2024-11-10 22:06:16,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:06:16" (3/3) ... [2024-11-10 22:06:16,542 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2024-11-10 22:06:16,559 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:06:16,559 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-10 22:06:16,560 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:06:16,619 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:06:16,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 44 transitions, 92 flow [2024-11-10 22:06:16,721 INFO L124 PetriNetUnfolderBase]: 7/49 cut-off events. [2024-11-10 22:06:16,722 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:06:16,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 49 events. 7/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 84 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 41. Up to 4 conditions per place. [2024-11-10 22:06:16,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 44 transitions, 92 flow [2024-11-10 22:06:16,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 44 transitions, 92 flow [2024-11-10 22:06:16,745 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:06:16,754 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;@6da4a34d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:06:16,755 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-10 22:06:16,765 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:06:16,766 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-11-10 22:06:16,766 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:06:16,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:06:16,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:06:16,768 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:06:16,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:06:16,773 INFO L85 PathProgramCache]: Analyzing trace with hash -150934172, now seen corresponding path program 1 times [2024-11-10 22:06:16,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:06:16,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699390106] [2024-11-10 22:06:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:06:16,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:06:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:06:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:06:17,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:06:17,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699390106] [2024-11-10 22:06:17,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699390106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:06:17,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:06:17,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:06:17,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817325443] [2024-11-10 22:06:17,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:06:17,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:06:17,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:06:17,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:06:17,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:06:17,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-10 22:06:17,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:17,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:06:17,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-10 22:06:17,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:06:17,847 INFO L124 PetriNetUnfolderBase]: 36/123 cut-off events. [2024-11-10 22:06:17,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:06:17,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 123 events. 36/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 312 event pairs, 2 based on Foata normal form. 29/133 useless extension candidates. Maximal degree in co-relation 200. Up to 77 conditions per place. [2024-11-10 22:06:17,852 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 21 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-11-10 22:06:17,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 122 flow [2024-11-10 22:06:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:06:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:06:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-10 22:06:17,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-11-10 22:06:17,867 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 92 flow. Second operand 3 states and 81 transitions. [2024-11-10 22:06:17,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 122 flow [2024-11-10 22:06:17,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:06:17,873 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 84 flow [2024-11-10 22:06:17,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-11-10 22:06:17,880 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2024-11-10 22:06:17,881 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 84 flow [2024-11-10 22:06:17,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:17,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:06:17,882 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:06:17,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:06:17,882 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:06:17,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:06:17,883 INFO L85 PathProgramCache]: Analyzing trace with hash -151079533, now seen corresponding path program 1 times [2024-11-10 22:06:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:06:17,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002149057] [2024-11-10 22:06:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:06:17,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:06:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:06:18,158 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:06:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:06:18,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:06:18,214 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:06:18,216 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-10 22:06:18,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-11-10 22:06:18,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-11-10 22:06:18,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-11-10 22:06:18,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-11-10 22:06:18,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-11-10 22:06:18,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-11-10 22:06:18,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-11-10 22:06:18,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-11-10 22:06:18,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-11-10 22:06:18,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-11-10 22:06:18,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-11-10 22:06:18,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-11-10 22:06:18,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-11-10 22:06:18,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-11-10 22:06:18,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-11-10 22:06:18,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-11-10 22:06:18,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-11-10 22:06:18,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-11-10 22:06:18,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-11-10 22:06:18,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-11-10 22:06:18,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:06:18,223 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 22:06:18,226 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:06:18,226 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 22:06:18,270 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:06:18,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 80 transitions, 170 flow [2024-11-10 22:06:18,294 INFO L124 PetriNetUnfolderBase]: 13/91 cut-off events. [2024-11-10 22:06:18,294 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:06:18,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 91 events. 13/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 245 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2024-11-10 22:06:18,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 80 transitions, 170 flow [2024-11-10 22:06:18,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 80 transitions, 170 flow [2024-11-10 22:06:18,299 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:06:18,300 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;@6da4a34d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:06:18,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-10 22:06:18,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:06:18,306 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-11-10 22:06:18,306 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:06:18,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:06:18,306 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:06:18,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-10 22:06:18,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:06:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2074100537, now seen corresponding path program 1 times [2024-11-10 22:06:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:06:18,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045685568] [2024-11-10 22:06:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:06:18,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:06:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:06:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:06:18,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:06:18,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045685568] [2024-11-10 22:06:18,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045685568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:06:18,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:06:18,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:06:18,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600837505] [2024-11-10 22:06:18,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:06:18,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:06:18,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:06:18,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:06:18,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:06:18,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 80 [2024-11-10 22:06:18,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:18,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:06:18,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 80 [2024-11-10 22:06:18,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:06:19,044 INFO L124 PetriNetUnfolderBase]: 1282/2384 cut-off events. [2024-11-10 22:06:19,045 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-10 22:06:19,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4454 conditions, 2384 events. 1282/2384 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13803 event pairs, 480 based on Foata normal form. 612/2505 useless extension candidates. Maximal degree in co-relation 3861. Up to 1985 conditions per place. [2024-11-10 22:06:19,064 INFO L140 encePairwiseOnDemand]: 55/80 looper letters, 39 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-10 22:06:19,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 231 flow [2024-11-10 22:06:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:06:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:06:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-11-10 22:06:19,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-11-10 22:06:19,067 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 170 flow. Second operand 3 states and 148 transitions. [2024-11-10 22:06:19,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 231 flow [2024-11-10 22:06:19,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:06:19,070 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 157 flow [2024-11-10 22:06:19,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-11-10 22:06:19,071 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -11 predicate places. [2024-11-10 22:06:19,071 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 157 flow [2024-11-10 22:06:19,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:19,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:06:19,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:06:19,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:06:19,072 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-10 22:06:19,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:06:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash -345767121, now seen corresponding path program 1 times [2024-11-10 22:06:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:06:19,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49582488] [2024-11-10 22:06:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:06:19,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:06:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:06:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:06:19,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:06:19,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49582488] [2024-11-10 22:06:19,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49582488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:06:19,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:06:19,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:06:19,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434810442] [2024-11-10 22:06:19,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:06:19,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:06:19,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:06:19,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:06:19,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:06:19,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 80 [2024-11-10 22:06:19,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:19,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:06:19,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 80 [2024-11-10 22:06:19,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:06:20,083 INFO L124 PetriNetUnfolderBase]: 1731/3295 cut-off events. [2024-11-10 22:06:20,083 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-10 22:06:20,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6630 conditions, 3295 events. 1731/3295 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 20739 event pairs, 300 based on Foata normal form. 60/2679 useless extension candidates. Maximal degree in co-relation 5842. Up to 2312 conditions per place. [2024-11-10 22:06:20,106 INFO L140 encePairwiseOnDemand]: 72/80 looper letters, 77 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2024-11-10 22:06:20,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 108 transitions, 462 flow [2024-11-10 22:06:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:06:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:06:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-11-10 22:06:20,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-11-10 22:06:20,109 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 157 flow. Second operand 6 states and 222 transitions. [2024-11-10 22:06:20,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 108 transitions, 462 flow [2024-11-10 22:06:20,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 108 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:06:20,114 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 216 flow [2024-11-10 22:06:20,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-11-10 22:06:20,115 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-11-10 22:06:20,116 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 216 flow [2024-11-10 22:06:20,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:20,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:06:20,117 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 22:06:20,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:06:20,117 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-10 22:06:20,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:06:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1248701776, now seen corresponding path program 1 times [2024-11-10 22:06:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:06:20,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200254448] [2024-11-10 22:06:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:06:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:06:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:06:20,435 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:06:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:06:20,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:06:20,459 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:06:20,459 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-11-10 22:06:20,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2024-11-10 22:06:20,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2024-11-10 22:06:20,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2024-11-10 22:06:20,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2024-11-10 22:06:20,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2024-11-10 22:06:20,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2024-11-10 22:06:20,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2024-11-10 22:06:20,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2024-11-10 22:06:20,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2024-11-10 22:06:20,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2024-11-10 22:06:20,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2024-11-10 22:06:20,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2024-11-10 22:06:20,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2024-11-10 22:06:20,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2024-11-10 22:06:20,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2024-11-10 22:06:20,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2024-11-10 22:06:20,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2024-11-10 22:06:20,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2024-11-10 22:06:20,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2024-11-10 22:06:20,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2024-11-10 22:06:20,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2024-11-10 22:06:20,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2024-11-10 22:06:20,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2024-11-10 22:06:20,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2024-11-10 22:06:20,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2024-11-10 22:06:20,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2024-11-10 22:06:20,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2024-11-10 22:06:20,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2024-11-10 22:06:20,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2024-11-10 22:06:20,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2024-11-10 22:06:20,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:06:20,467 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 22:06:20,470 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:06:20,471 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 22:06:20,532 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:06:20,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 116 transitions, 250 flow [2024-11-10 22:06:20,552 INFO L124 PetriNetUnfolderBase]: 19/133 cut-off events. [2024-11-10 22:06:20,553 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 22:06:20,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 19/133 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 435 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 111. Up to 8 conditions per place. [2024-11-10 22:06:20,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 116 transitions, 250 flow [2024-11-10 22:06:20,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 116 transitions, 250 flow [2024-11-10 22:06:20,557 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:06:20,559 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;@6da4a34d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:06:20,559 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-10 22:06:20,564 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:06:20,567 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-10 22:06:20,567 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:06:20,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:06:20,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:06:20,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:06:20,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:06:20,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1563651434, now seen corresponding path program 1 times [2024-11-10 22:06:20,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:06:20,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730324884] [2024-11-10 22:06:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:06:20,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:06:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:06:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:06:20,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:06:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730324884] [2024-11-10 22:06:20,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730324884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:06:20,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:06:20,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:06:20,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847399446] [2024-11-10 22:06:20,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:06:20,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:06:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:06:20,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:06:20,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:06:20,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 116 [2024-11-10 22:06:20,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 116 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:20,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:06:20,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 116 [2024-11-10 22:06:20,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:06:25,610 INFO L124 PetriNetUnfolderBase]: 30591/47085 cut-off events. [2024-11-10 22:06:25,611 INFO L125 PetriNetUnfolderBase]: For 1424/1424 co-relation queries the response was YES. [2024-11-10 22:06:25,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89523 conditions, 47085 events. 30591/47085 cut-off events. For 1424/1424 co-relation queries the response was YES. Maximal size of possible extension queue 1248. Compared 348695 event pairs, 15869 based on Foata normal form. 12097/49113 useless extension candidates. Maximal degree in co-relation 72825. Up to 41384 conditions per place. [2024-11-10 22:06:25,985 INFO L140 encePairwiseOnDemand]: 80/116 looper letters, 57 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2024-11-10 22:06:25,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 96 transitions, 344 flow [2024-11-10 22:06:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:06:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:06:25,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2024-11-10 22:06:25,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.617816091954023 [2024-11-10 22:06:25,988 INFO L175 Difference]: Start difference. First operand has 107 places, 116 transitions, 250 flow. Second operand 3 states and 215 transitions. [2024-11-10 22:06:25,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 96 transitions, 344 flow [2024-11-10 22:06:25,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 340 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-10 22:06:25,995 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 230 flow [2024-11-10 22:06:25,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-11-10 22:06:25,998 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -17 predicate places. [2024-11-10 22:06:25,998 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 230 flow [2024-11-10 22:06:25,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:25,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:06:25,998 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:06:25,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:06:25,999 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:06:25,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:06:26,003 INFO L85 PathProgramCache]: Analyzing trace with hash -569498222, now seen corresponding path program 1 times [2024-11-10 22:06:26,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:06:26,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017553978] [2024-11-10 22:06:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:06:26,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:06:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:06:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:06:26,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:06:26,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017553978] [2024-11-10 22:06:26,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017553978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:06:26,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:06:26,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:06:26,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580229490] [2024-11-10 22:06:26,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:06:26,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:06:26,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:06:26,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:06:26,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:06:26,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 116 [2024-11-10 22:06:26,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:26,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:06:26,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 116 [2024-11-10 22:06:26,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:06:31,121 INFO L124 PetriNetUnfolderBase]: 38256/59538 cut-off events. [2024-11-10 22:06:31,122 INFO L125 PetriNetUnfolderBase]: For 3062/3062 co-relation queries the response was YES. [2024-11-10 22:06:31,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123105 conditions, 59538 events. 38256/59538 cut-off events. For 3062/3062 co-relation queries the response was YES. Maximal size of possible extension queue 1656. Compared 467439 event pairs, 11699 based on Foata normal form. 807/47277 useless extension candidates. Maximal degree in co-relation 116323. Up to 47786 conditions per place. [2024-11-10 22:06:31,564 INFO L140 encePairwiseOnDemand]: 107/116 looper letters, 121 selfloop transitions, 12 changer transitions 0/166 dead transitions. [2024-11-10 22:06:31,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 166 transitions, 733 flow [2024-11-10 22:06:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:06:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:06:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 335 transitions. [2024-11-10 22:06:31,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4813218390804598 [2024-11-10 22:06:31,567 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 230 flow. Second operand 6 states and 335 transitions. [2024-11-10 22:06:31,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 166 transitions, 733 flow [2024-11-10 22:06:31,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 166 transitions, 729 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:06:31,576 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 309 flow [2024-11-10 22:06:31,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2024-11-10 22:06:31,577 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -10 predicate places. [2024-11-10 22:06:31,577 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 309 flow [2024-11-10 22:06:31,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:31,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:06:31,578 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:06:31,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:06:31,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:06:31,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:06:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash -872997716, now seen corresponding path program 1 times [2024-11-10 22:06:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:06:31,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057799306] [2024-11-10 22:06:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:06:31,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:06:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:06:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:06:31,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:06:31,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057799306] [2024-11-10 22:06:31,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057799306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:06:31,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:06:31,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:06:31,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773263842] [2024-11-10 22:06:31,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:06:31,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:06:31,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:06:31,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:06:31,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:06:31,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 116 [2024-11-10 22:06:31,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:31,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:06:31,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 116 [2024-11-10 22:06:31,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:06:37,658 INFO L124 PetriNetUnfolderBase]: 44416/69616 cut-off events. [2024-11-10 22:06:37,659 INFO L125 PetriNetUnfolderBase]: For 18009/18135 co-relation queries the response was YES. [2024-11-10 22:06:37,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154125 conditions, 69616 events. 44416/69616 cut-off events. For 18009/18135 co-relation queries the response was YES. Maximal size of possible extension queue 1940. Compared 563716 event pairs, 17942 based on Foata normal form. 864/58515 useless extension candidates. Maximal degree in co-relation 144695. Up to 56417 conditions per place. [2024-11-10 22:06:38,332 INFO L140 encePairwiseOnDemand]: 107/116 looper letters, 127 selfloop transitions, 12 changer transitions 0/172 dead transitions. [2024-11-10 22:06:38,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 172 transitions, 828 flow [2024-11-10 22:06:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:06:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:06:38,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2024-11-10 22:06:38,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47844827586206895 [2024-11-10 22:06:38,334 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 309 flow. Second operand 6 states and 333 transitions. [2024-11-10 22:06:38,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 172 transitions, 828 flow [2024-11-10 22:06:38,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 172 transitions, 824 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:06:38,365 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 396 flow [2024-11-10 22:06:38,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2024-11-10 22:06:38,366 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -3 predicate places. [2024-11-10 22:06:38,366 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 396 flow [2024-11-10 22:06:38,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:06:38,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:06:38,367 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-10 22:06:38,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:06:38,368 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:06:38,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:06:38,368 INFO L85 PathProgramCache]: Analyzing trace with hash 314957972, now seen corresponding path program 1 times [2024-11-10 22:06:38,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:06:38,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151376043] [2024-11-10 22:06:38,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:06:38,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:06:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:06:38,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:06:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:06:38,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:06:38,776 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:06:38,776 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2024-11-10 22:06:38,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2024-11-10 22:06:38,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2024-11-10 22:06:38,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2024-11-10 22:06:38,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2024-11-10 22:06:38,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2024-11-10 22:06:38,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2024-11-10 22:06:38,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2024-11-10 22:06:38,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2024-11-10 22:06:38,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2024-11-10 22:06:38,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2024-11-10 22:06:38,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2024-11-10 22:06:38,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2024-11-10 22:06:38,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2024-11-10 22:06:38,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2024-11-10 22:06:38,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2024-11-10 22:06:38,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2024-11-10 22:06:38,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2024-11-10 22:06:38,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2024-11-10 22:06:38,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2024-11-10 22:06:38,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2024-11-10 22:06:38,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2024-11-10 22:06:38,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2024-11-10 22:06:38,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2024-11-10 22:06:38,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2024-11-10 22:06:38,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2024-11-10 22:06:38,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2024-11-10 22:06:38,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2024-11-10 22:06:38,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2024-11-10 22:06:38,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2024-11-10 22:06:38,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2024-11-10 22:06:38,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2024-11-10 22:06:38,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2024-11-10 22:06:38,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2024-11-10 22:06:38,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2024-11-10 22:06:38,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2024-11-10 22:06:38,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2024-11-10 22:06:38,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2024-11-10 22:06:38,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2024-11-10 22:06:38,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2024-11-10 22:06:38,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2024-11-10 22:06:38,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:06:38,783 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-10 22:06:38,784 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:06:38,784 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 22:06:38,840 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:06:38,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 152 transitions, 332 flow [2024-11-10 22:06:38,865 INFO L124 PetriNetUnfolderBase]: 25/175 cut-off events. [2024-11-10 22:06:38,865 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 22:06:38,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 175 events. 25/175 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 146. Up to 10 conditions per place. [2024-11-10 22:06:38,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 152 transitions, 332 flow [2024-11-10 22:06:38,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 152 transitions, 332 flow [2024-11-10 22:06:38,871 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:06:38,872 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;@6da4a34d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:06:38,872 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-11-10 22:06:38,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:06:38,875 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-11-10 22:06:38,875 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:06:38,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:06:38,875 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:06:38,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-10 22:06:38,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:06:38,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2120425267, now seen corresponding path program 1 times [2024-11-10 22:06:38,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:06:38,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892820045] [2024-11-10 22:06:38,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:06:38,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:06:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:06:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:06:39,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:06:39,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892820045] [2024-11-10 22:06:39,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892820045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:06:39,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:06:39,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:06:39,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679745501] [2024-11-10 22:06:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:06:39,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:06:39,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:06:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:06:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:06:39,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 152 [2024-11-10 22:06:39,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 152 transitions, 332 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) [2024-11-10 22:06:39,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:06:39,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 152 [2024-11-10 22:06:39,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand