./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:41:14,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:41:14,486 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:41:14,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:41:14,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:41:14,524 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:41:14,525 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:41:14,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:41:14,526 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:41:14,526 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:41:14,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:41:14,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:41:14,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:41:14,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:41:14,531 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:41:14,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:41:14,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:41:14,532 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:41:14,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:41:14,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:41:14,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:41:14,533 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:41:14,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:41:14,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:41:14,533 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:41:14,534 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:41:14,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:41:14,534 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:41:14,534 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:41:14,534 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:41:14,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:41:14,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:41:14,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:41:14,535 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:41:14,535 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:41:14,535 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:41:14,536 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:41:14,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:41:14,536 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:41:14,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:41:14,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:41:14,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:41:14,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2024-11-22 13:41:14,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:41:14,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:41:14,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:41:14,876 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:41:14,877 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:41:14,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2024-11-22 13:41:16,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:41:16,641 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:41:16,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2024-11-22 13:41:16,658 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8b95b6a8/1408c469fbfa42fb8b20d4e4746e68b9/FLAG4cc89de4d [2024-11-22 13:41:16,672 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8b95b6a8/1408c469fbfa42fb8b20d4e4746e68b9 [2024-11-22 13:41:16,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:41:16,676 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:41:16,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:41:16,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:41:16,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:41:16,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:41:16" (1/1) ... [2024-11-22 13:41:16,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca6778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:16, skipping insertion in model container [2024-11-22 13:41:16,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:41:16" (1/1) ... [2024-11-22 13:41:16,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:41:17,146 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2024-11-22 13:41:17,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:41:17,200 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:41:17,232 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2024-11-22 13:41:17,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:41:17,302 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:41:17,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17 WrapperNode [2024-11-22 13:41:17,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:41:17,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:41:17,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:41:17,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:41:17,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,364 INFO L138 Inliner]: procedures = 271, calls = 109, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 272 [2024-11-22 13:41:17,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:41:17,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:41:17,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:41:17,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:41:17,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,385 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,416 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 2, 5, 70]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 0, 5, 60]. The 5 writes are split as follows [0, 1, 0, 4]. [2024-11-22 13:41:17,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:41:17,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:41:17,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:41:17,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:41:17,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (1/1) ... [2024-11-22 13:41:17,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:41:17,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:41:17,487 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) [2024-11-22 13:41:17,489 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 [2024-11-22 13:41:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 13:41:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 13:41:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 13:41:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:41:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:41:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 13:41:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 13:41:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:41:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:41:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 13:41:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 13:41:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 13:41:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:41:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-22 13:41:17,528 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-22 13:41:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:41:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:41:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 13:41:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 13:41:17,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:41:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:41:17,530 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:41:17,628 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:41:17,630 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:41:17,888 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:41:17,888 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:41:18,248 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:41:18,248 INFO L316 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-22 13:41:18,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:41:18 BoogieIcfgContainer [2024-11-22 13:41:18,248 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:41:18,250 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:41:18,250 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:41:18,254 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:41:18,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:41:16" (1/3) ... [2024-11-22 13:41:18,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12990d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:41:18, skipping insertion in model container [2024-11-22 13:41:18,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:17" (2/3) ... [2024-11-22 13:41:18,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12990d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:41:18, skipping insertion in model container [2024-11-22 13:41:18,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:41:18" (3/3) ... [2024-11-22 13:41:18,257 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2024-11-22 13:41:18,270 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:41:18,270 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 13:41:18,270 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:41:18,306 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-22 13:41:18,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 93 transitions, 193 flow [2024-11-22 13:41:18,431 INFO L124 PetriNetUnfolderBase]: 38/137 cut-off events. [2024-11-22 13:41:18,433 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 13:41:18,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 137 events. 38/137 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 544 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 86. Up to 8 conditions per place. [2024-11-22 13:41:18,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 93 transitions, 193 flow [2024-11-22 13:41:18,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 91 transitions, 186 flow [2024-11-22 13:41:18,453 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:41:18,459 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;@37ba889c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:41:18,460 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:41:18,469 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:41:18,469 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-22 13:41:18,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:41:18,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:41:18,471 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-22 13:41:18,472 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-22 13:41:18,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:41:18,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1518403241, now seen corresponding path program 1 times [2024-11-22 13:41:18,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:41:18,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644276401] [2024-11-22 13:41:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:41:18,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:41:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:41:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:41:18,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:41:18,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644276401] [2024-11-22 13:41:18,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644276401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:41:18,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:41:18,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:41:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542932122] [2024-11-22 13:41:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:41:18,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:41:18,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:41:18,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:41:18,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:41:18,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 93 [2024-11-22 13:41:18,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 91 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-22 13:41:18,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:41:18,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 93 [2024-11-22 13:41:18,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:41:19,036 INFO L124 PetriNetUnfolderBase]: 399/1134 cut-off events. [2024-11-22 13:41:19,036 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:41:19,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1928 conditions, 1134 events. 399/1134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7244 event pairs, 357 based on Foata normal form. 278/1290 useless extension candidates. Maximal degree in co-relation 1859. Up to 789 conditions per place. [2024-11-22 13:41:19,043 INFO L140 encePairwiseOnDemand]: 68/93 looper letters, 41 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-22 13:41:19,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 230 flow [2024-11-22 13:41:19,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:41:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:41:19,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-22 13:41:19,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-11-22 13:41:19,060 INFO L175 Difference]: Start difference. First operand has 69 places, 91 transitions, 186 flow. Second operand 3 states and 147 transitions. [2024-11-22 13:41:19,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 230 flow [2024-11-22 13:41:19,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:41:19,067 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 154 flow [2024-11-22 13:41:19,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-11-22 13:41:19,071 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2024-11-22 13:41:19,071 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 154 flow [2024-11-22 13:41:19,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-22 13:41:19,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:41:19,072 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-22 13:41:19,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:41:19,072 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-22 13:41:19,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:41:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1174658671, now seen corresponding path program 1 times [2024-11-22 13:41:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:41:19,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82052924] [2024-11-22 13:41:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:41:19,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:41:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:41:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:41:19,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:41:19,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82052924] [2024-11-22 13:41:19,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82052924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:41:19,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497577955] [2024-11-22 13:41:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:41:19,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:41:19,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:41:19,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:41:19,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:41:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:41:19,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 13:41:19,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:41:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:41:19,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:41:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:41:19,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497577955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:41:19,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:41:19,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-22 13:41:19,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216736432] [2024-11-22 13:41:19,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:41:19,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:41:19,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:41:19,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:41:19,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:41:19,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 93 [2024-11-22 13:41:19,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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) [2024-11-22 13:41:19,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:41:19,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 93 [2024-11-22 13:41:19,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:41:19,611 INFO L124 PetriNetUnfolderBase]: 399/1137 cut-off events. [2024-11-22 13:41:19,611 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:41:19,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 1137 events. 399/1137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7236 event pairs, 357 based on Foata normal form. 0/1015 useless extension candidates. Maximal degree in co-relation 1932. Up to 789 conditions per place. [2024-11-22 13:41:19,615 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 41 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-11-22 13:41:19,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 258 flow [2024-11-22 13:41:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:41:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:41:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-11-22 13:41:19,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3781362007168459 [2024-11-22 13:41:19,617 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 154 flow. Second operand 6 states and 211 transitions. [2024-11-22 13:41:19,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 258 flow [2024-11-22 13:41:19,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 254 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 13:41:19,619 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 186 flow [2024-11-22 13:41:19,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-11-22 13:41:19,621 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2024-11-22 13:41:19,621 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 186 flow [2024-11-22 13:41:19,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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) [2024-11-22 13:41:19,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:41:19,621 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-11-22 13:41:19,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:41:19,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:41:19,828 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-22 13:41:19,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:41:19,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1809989591, now seen corresponding path program 2 times [2024-11-22 13:41:19,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:41:19,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997580152] [2024-11-22 13:41:19,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:41:19,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:41:19,870 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:41:19,870 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:41:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:41:19,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:41:19,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997580152] [2024-11-22 13:41:19,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997580152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:41:19,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422704234] [2024-11-22 13:41:19,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:41:19,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:41:19,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:41:19,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:41:20,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:41:20,080 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:41:20,080 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:41:20,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:41:20,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:41:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:41:20,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:41:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:41:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422704234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:41:20,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:41:20,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-22 13:41:20,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131265112] [2024-11-22 13:41:20,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:41:20,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:41:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:41:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:41:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:41:20,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 93 [2024-11-22 13:41:20,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 28.307692307692307) internal successors, (368), 13 states have internal predecessors, (368), 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) [2024-11-22 13:41:20,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:41:20,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 93 [2024-11-22 13:41:20,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:41:20,360 INFO L124 PetriNetUnfolderBase]: 399/1143 cut-off events. [2024-11-22 13:41:20,360 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-22 13:41:20,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1981 conditions, 1143 events. 399/1143 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7221 event pairs, 357 based on Foata normal form. 6/1028 useless extension candidates. Maximal degree in co-relation 1923. Up to 789 conditions per place. [2024-11-22 13:41:20,366 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 41 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-11-22 13:41:20,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 326 flow [2024-11-22 13:41:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:41:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:41:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 382 transitions. [2024-11-22 13:41:20,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34229390681003585 [2024-11-22 13:41:20,369 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 186 flow. Second operand 12 states and 382 transitions. [2024-11-22 13:41:20,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 79 transitions, 326 flow [2024-11-22 13:41:20,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 312 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-22 13:41:20,374 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 256 flow [2024-11-22 13:41:20,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=256, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-11-22 13:41:20,375 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 26 predicate places. [2024-11-22 13:41:20,375 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 256 flow [2024-11-22 13:41:20,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 28.307692307692307) internal successors, (368), 13 states have internal predecessors, (368), 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) [2024-11-22 13:41:20,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:41:20,377 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-11-22 13:41:20,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:41:20,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-22 13:41:20,578 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-22 13:41:20,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:41:20,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1430979991, now seen corresponding path program 3 times [2024-11-22 13:41:20,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:41:20,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134649345] [2024-11-22 13:41:20,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:41:20,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:41:20,634 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 13:41:20,634 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-22 13:41:20,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 13:41:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:41:20,681 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 13:41:20,681 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 13:41:20,682 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-22 13:41:20,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-22 13:41:20,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-22 13:41:20,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-22 13:41:20,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:41:20,684 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-22 13:41:20,686 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 13:41:20,686 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 13:41:20,715 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 13:41:20,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 136 transitions, 288 flow [2024-11-22 13:41:20,732 INFO L124 PetriNetUnfolderBase]: 64/231 cut-off events. [2024-11-22 13:41:20,732 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 13:41:20,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 231 events. 64/231 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1084 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 139. Up to 12 conditions per place. [2024-11-22 13:41:20,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 136 transitions, 288 flow [2024-11-22 13:41:20,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 136 transitions, 288 flow [2024-11-22 13:41:20,739 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:41:20,740 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;@37ba889c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:41:20,740 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-22 13:41:20,744 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:41:20,744 INFO L124 PetriNetUnfolderBase]: 7/54 cut-off events. [2024-11-22 13:41:20,744 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:41:20,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:41:20,744 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-11-22 13:41:20,747 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-22 13:41:20,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:41:20,748 INFO L85 PathProgramCache]: Analyzing trace with hash 886576410, now seen corresponding path program 1 times [2024-11-22 13:41:20,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:41:20,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642479608] [2024-11-22 13:41:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:41:20,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:41:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:41:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 13:41:20,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:41:20,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642479608] [2024-11-22 13:41:20,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642479608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:41:20,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:41:20,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:41:20,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669036871] [2024-11-22 13:41:20,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:41:20,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:41:20,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:41:20,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:41:20,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:41:20,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 136 [2024-11-22 13:41:20,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-22 13:41:20,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:41:20,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 136 [2024-11-22 13:41:20,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:41:23,088 INFO L124 PetriNetUnfolderBase]: 14783/28870 cut-off events. [2024-11-22 13:41:23,089 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-11-22 13:41:23,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50828 conditions, 28870 events. 14783/28870 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 265947 event pairs, 13600 based on Foata normal form. 7914/33823 useless extension candidates. Maximal degree in co-relation 40721. Up to 21860 conditions per place. [2024-11-22 13:41:23,219 INFO L140 encePairwiseOnDemand]: 100/136 looper letters, 62 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-11-22 13:41:23,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 352 flow [2024-11-22 13:41:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:41:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:41:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2024-11-22 13:41:23,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5343137254901961 [2024-11-22 13:41:23,220 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 288 flow. Second operand 3 states and 218 transitions. [2024-11-22 13:41:23,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 104 transitions, 352 flow [2024-11-22 13:41:23,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 104 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:41:23,227 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 234 flow [2024-11-22 13:41:23,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2024-11-22 13:41:23,227 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2024-11-22 13:41:23,227 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 234 flow [2024-11-22 13:41:23,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-22 13:41:23,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:41:23,228 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 13:41:23,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:41:23,228 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-22 13:41:23,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:41:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1688188632, now seen corresponding path program 1 times [2024-11-22 13:41:23,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:41:23,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125318013] [2024-11-22 13:41:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:41:23,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:41:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:41:23,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 13:41:23,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:41:23,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125318013] [2024-11-22 13:41:23,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125318013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:41:23,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133757845] [2024-11-22 13:41:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:41:23,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:41:23,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:41:23,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:41:23,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:41:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:41:23,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 13:41:23,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:41:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 13:41:23,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:41:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 13:41:23,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133757845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:41:23,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:41:23,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-22 13:41:23,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61729902] [2024-11-22 13:41:23,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:41:23,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:41:23,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:41:23,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:41:23,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:41:23,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 136 [2024-11-22 13:41:23,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 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) [2024-11-22 13:41:23,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:41:23,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 136 [2024-11-22 13:41:23,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:41:25,869 INFO L124 PetriNetUnfolderBase]: 14783/28873 cut-off events. [2024-11-22 13:41:25,869 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-11-22 13:41:25,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50844 conditions, 28873 events. 14783/28873 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 265990 event pairs, 13600 based on Foata normal form. 0/25912 useless extension candidates. Maximal degree in co-relation 50831. Up to 21860 conditions per place. [2024-11-22 13:41:25,989 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 62 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-11-22 13:41:25,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 380 flow [2024-11-22 13:41:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:41:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:41:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2024-11-22 13:41:25,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3799019607843137 [2024-11-22 13:41:25,991 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 234 flow. Second operand 6 states and 310 transitions. [2024-11-22 13:41:25,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 380 flow [2024-11-22 13:41:25,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 376 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 13:41:25,995 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 266 flow [2024-11-22 13:41:25,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-11-22 13:41:25,998 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2024-11-22 13:41:25,998 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 266 flow [2024-11-22 13:41:25,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 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) [2024-11-22 13:41:25,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:41:25,998 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-11-22 13:41:26,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 13:41:26,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:41:26,203 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-22 13:41:26,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:41:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1353996134, now seen corresponding path program 2 times [2024-11-22 13:41:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:41:26,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568505235] [2024-11-22 13:41:26,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:41:26,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:41:26,224 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:41:26,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:41:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 13:41:26,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:41:26,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568505235] [2024-11-22 13:41:26,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568505235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:41:26,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149203979] [2024-11-22 13:41:26,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:41:26,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:41:26,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:41:26,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:41:26,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:41:26,388 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:41:26,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:41:26,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:41:26,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:41:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 13:41:26,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:41:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 13:41:26,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149203979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:41:26,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:41:26,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-22 13:41:26,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901939024] [2024-11-22 13:41:26,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:41:26,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:41:26,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:41:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:41:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:41:26,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 136 [2024-11-22 13:41:26,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 266 flow. Second operand has 13 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 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) [2024-11-22 13:41:26,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:41:26,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 136 [2024-11-22 13:41:26,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:41:28,450 INFO L124 PetriNetUnfolderBase]: 14783/28879 cut-off events. [2024-11-22 13:41:28,451 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-22 13:41:28,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50881 conditions, 28879 events. 14783/28879 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 266016 event pairs, 13600 based on Foata normal form. 6/25925 useless extension candidates. Maximal degree in co-relation 50822. Up to 21860 conditions per place. [2024-11-22 13:41:28,580 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 62 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2024-11-22 13:41:28,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 448 flow [2024-11-22 13:41:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:41:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:41:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 559 transitions. [2024-11-22 13:41:28,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3425245098039216 [2024-11-22 13:41:28,582 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 266 flow. Second operand 12 states and 559 transitions. [2024-11-22 13:41:28,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 448 flow [2024-11-22 13:41:28,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 113 transitions, 434 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-22 13:41:28,585 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 336 flow [2024-11-22 13:41:28,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=336, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2024-11-22 13:41:28,586 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 26 predicate places. [2024-11-22 13:41:28,586 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 336 flow [2024-11-22 13:41:28,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 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) [2024-11-22 13:41:28,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:41:28,587 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-11-22 13:41:28,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 13:41:28,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:41:28,793 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-22 13:41:28,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:41:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash -250462758, now seen corresponding path program 3 times [2024-11-22 13:41:28,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:41:28,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640700369] [2024-11-22 13:41:28,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:41:28,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:41:28,833 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 13:41:28,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-22 13:41:28,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 13:41:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:41:28,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 13:41:28,863 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 13:41:28,864 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-22 13:41:28,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-22 13:41:28,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-22 13:41:28,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-22 13:41:28,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-22 13:41:28,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:41:28,864 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-22 13:41:28,865 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 13:41:28,865 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-22 13:41:28,899 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:41:28,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 179 transitions, 385 flow [2024-11-22 13:41:28,928 INFO L124 PetriNetUnfolderBase]: 93/336 cut-off events. [2024-11-22 13:41:28,928 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-22 13:41:28,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 336 events. 93/336 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1697 event pairs, 1 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 240. Up to 16 conditions per place. [2024-11-22 13:41:28,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 179 transitions, 385 flow [2024-11-22 13:41:28,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 179 transitions, 385 flow [2024-11-22 13:41:28,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:41:28,937 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;@37ba889c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:41:28,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 13:41:28,944 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:41:28,944 INFO L124 PetriNetUnfolderBase]: 13/84 cut-off events. [2024-11-22 13:41:28,944 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 13:41:28,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:41:28,944 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:41:28,945 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-22 13:41:28,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:41:28,945 INFO L85 PathProgramCache]: Analyzing trace with hash -808902125, now seen corresponding path program 1 times [2024-11-22 13:41:28,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:41:28,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397530056] [2024-11-22 13:41:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:41:28,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:41:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:41:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:41:28,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:41:28,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397530056] [2024-11-22 13:41:28,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397530056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:41:28,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:41:28,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:41:28,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122631339] [2024-11-22 13:41:28,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:41:28,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:41:28,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:41:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:41:28,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:41:28,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 179 [2024-11-22 13:41:28,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 179 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2024-11-22 13:41:28,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:41:28,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 179 [2024-11-22 13:41:28,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand