./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.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_06-cond_racing1.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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:39:50,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:39:50,606 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:39:50,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:39:50,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:39:50,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:39:50,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:39:50,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:39:50,638 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:39:50,639 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:39:50,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:39:50,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:39:50,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:39:50,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:39:50,640 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:39:50,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:39:50,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:39:50,641 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:39:50,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:39:50,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:39:50,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:39:50,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:39:50,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:39:50,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:39:50,643 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:39:50,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:39:50,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:39:50,644 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:39:50,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:39:50,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:39:50,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:39:50,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:39:50,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:39:50,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:39:50,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:39:50,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:39:50,646 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:39:50,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:39:50,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:39:50,646 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:39:50,646 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:39:50,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:39:50,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc [2024-11-22 13:39:50,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:39:50,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:39:50,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:39:50,861 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:39:50,862 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:39:50,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2024-11-22 13:39:52,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:39:52,336 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:39:52,336 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2024-11-22 13:39:52,349 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4078eb608/2d9664ba54fa411991796733273e052e/FLAG1fa77394d [2024-11-22 13:39:52,361 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4078eb608/2d9664ba54fa411991796733273e052e [2024-11-22 13:39:52,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:39:52,364 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:39:52,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:39:52,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:39:52,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:39:52,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:52,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b21d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52, skipping insertion in model container [2024-11-22 13:39:52,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:52,414 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:39:52,741 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_06-cond_racing1.i[41322,41335] [2024-11-22 13:39:52,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:39:52,793 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:39:52,835 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_06-cond_racing1.i[41322,41335] [2024-11-22 13:39:52,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:39:52,943 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:39:52,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52 WrapperNode [2024-11-22 13:39:52,944 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:39:52,945 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:39:52,945 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:39:52,945 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:39:52,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:52,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:52,991 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2024-11-22 13:39:52,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:39:52,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:39:52,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:39:52,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:39:53,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:53,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:53,011 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:53,022 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 2, 5, 5, 5]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0, 0]. [2024-11-22 13:39:53,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:53,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:53,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:53,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:53,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:53,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:53,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:39:53,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:39:53,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:39:53,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:39:53,037 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (1/1) ... [2024-11-22 13:39:53,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:39:53,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:39:53,071 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 13:39:53,074 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 13:39:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 13:39:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 13:39:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 13:39:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:39:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:39:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 13:39:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 13:39:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 13:39:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:39:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:39:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 13:39:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 13:39:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 13:39:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 13:39:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:39:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-22 13:39:53,115 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-22 13:39:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:39:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:39:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 13:39:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 13:39:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 13:39:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:39:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:39:53,117 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 13:39:53,253 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:39:53,255 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:39:53,471 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:39:53,472 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:39:53,614 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:39:53,614 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-22 13:39:53,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:39:53 BoogieIcfgContainer [2024-11-22 13:39:53,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:39:53,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:39:53,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:39:53,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:39:53,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:39:52" (1/3) ... [2024-11-22 13:39:53,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c7dd4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:39:53, skipping insertion in model container [2024-11-22 13:39:53,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:52" (2/3) ... [2024-11-22 13:39:53,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c7dd4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:39:53, skipping insertion in model container [2024-11-22 13:39:53,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:39:53" (3/3) ... [2024-11-22 13:39:53,624 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2024-11-22 13:39:53,637 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:39:53,638 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:39:53,638 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:39:53,673 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-22 13:39:53,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 56 transitions, 119 flow [2024-11-22 13:39:53,723 INFO L124 PetriNetUnfolderBase]: 19/83 cut-off events. [2024-11-22 13:39:53,724 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 13:39:53,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 83 events. 19/83 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 269 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 51. Up to 6 conditions per place. [2024-11-22 13:39:53,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 56 transitions, 119 flow [2024-11-22 13:39:53,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 54 transitions, 112 flow [2024-11-22 13:39:53,740 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:39:53,745 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;@37f02b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:39:53,745 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 13:39:53,750 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:39:53,750 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-22 13:39:53,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:39:53,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:39:53,752 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-22 13:39:53,753 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:39:53,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:39:53,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1607200833, now seen corresponding path program 1 times [2024-11-22 13:39:53,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:39:53,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018946297] [2024-11-22 13:39:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:39:53,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:39:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:39:53,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 13:39:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:39:53,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 13:39:53,925 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 13:39:53,926 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-22 13:39:53,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-22 13:39:53,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:39:53,928 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-22 13:39:53,936 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 13:39:53,936 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 13:39:53,952 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 13:39:53,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 81 transitions, 178 flow [2024-11-22 13:39:53,978 INFO L124 PetriNetUnfolderBase]: 33/142 cut-off events. [2024-11-22 13:39:53,979 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 13:39:53,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 33/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 566 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 87. Up to 9 conditions per place. [2024-11-22 13:39:53,982 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 81 transitions, 178 flow [2024-11-22 13:39:53,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 81 transitions, 178 flow [2024-11-22 13:39:53,987 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:39:53,988 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;@37f02b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:39:53,988 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 13:39:54,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:39:54,005 INFO L124 PetriNetUnfolderBase]: 8/52 cut-off events. [2024-11-22 13:39:54,005 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:39:54,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:39:54,005 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-22 13:39:54,005 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:39:54,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:39:54,006 INFO L85 PathProgramCache]: Analyzing trace with hash -557352325, now seen corresponding path program 1 times [2024-11-22 13:39:54,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:39:54,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019443438] [2024-11-22 13:39:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:39:54,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:39:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:39:54,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 13:39:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:39:54,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 13:39:54,100 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 13:39:54,100 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-22 13:39:54,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-22 13:39:54,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:39:54,100 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-22 13:39:54,101 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 13:39:54,101 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-22 13:39:54,146 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:39:54,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 106 transitions, 239 flow [2024-11-22 13:39:54,186 INFO L124 PetriNetUnfolderBase]: 50/212 cut-off events. [2024-11-22 13:39:54,187 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-22 13:39:54,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 212 events. 50/212 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 906 event pairs, 1 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 153. Up to 12 conditions per place. [2024-11-22 13:39:54,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 106 transitions, 239 flow [2024-11-22 13:39:54,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 106 transitions, 239 flow [2024-11-22 13:39:54,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:39:54,197 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;@37f02b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:39:54,197 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 13:39:54,203 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:39:54,204 INFO L124 PetriNetUnfolderBase]: 9/58 cut-off events. [2024-11-22 13:39:54,204 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 13:39:54,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:39:54,204 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:39:54,205 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:39:54,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:39:54,205 INFO L85 PathProgramCache]: Analyzing trace with hash 719272652, now seen corresponding path program 1 times [2024-11-22 13:39:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:39:54,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644750271] [2024-11-22 13:39:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:39:54,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:39:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:39:54,311 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 13:39:54,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:39:54,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644750271] [2024-11-22 13:39:54,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644750271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:39:54,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:39:54,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:39:54,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422707483] [2024-11-22 13:39:54,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:39:54,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:39:54,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:39:54,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:39:54,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:39:54,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 106 [2024-11-22 13:39:54,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 106 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 13:39:54,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:39:54,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 106 [2024-11-22 13:39:54,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:39:59,488 INFO L124 PetriNetUnfolderBase]: 44900/72634 cut-off events. [2024-11-22 13:39:59,488 INFO L125 PetriNetUnfolderBase]: For 1369/1369 co-relation queries the response was YES. [2024-11-22 13:39:59,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134540 conditions, 72634 events. 44900/72634 cut-off events. For 1369/1369 co-relation queries the response was YES. Maximal size of possible extension queue 2008. Compared 637248 event pairs, 26352 based on Foata normal form. 20384/87864 useless extension candidates. Maximal degree in co-relation 10325. Up to 61095 conditions per place. [2024-11-22 13:39:59,747 INFO L140 encePairwiseOnDemand]: 82/106 looper letters, 49 selfloop transitions, 2 changer transitions 11/96 dead transitions. [2024-11-22 13:39:59,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 337 flow [2024-11-22 13:39:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:39:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:39:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-11-22 13:39:59,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-11-22 13:39:59,760 INFO L175 Difference]: Start difference. First operand has 86 places, 106 transitions, 239 flow. Second operand 3 states and 198 transitions. [2024-11-22 13:39:59,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 337 flow [2024-11-22 13:39:59,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:39:59,767 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 178 flow [2024-11-22 13:39:59,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-11-22 13:39:59,771 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-11-22 13:39:59,775 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 178 flow [2024-11-22 13:39:59,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 13:39:59,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:39:59,776 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-22 13:39:59,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:39:59,776 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:39:59,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:39:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash -916806050, now seen corresponding path program 1 times [2024-11-22 13:39:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:39:59,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859851222] [2024-11-22 13:39:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:39:59,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:39:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:39:59,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 13:39:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:39:59,834 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 13:39:59,836 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 13:39:59,837 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-22 13:39:59,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-22 13:39:59,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:39:59,837 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-22 13:39:59,838 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 13:39:59,838 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-22 13:39:59,863 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-22 13:39:59,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 131 transitions, 302 flow [2024-11-22 13:39:59,886 INFO L124 PetriNetUnfolderBase]: 75/306 cut-off events. [2024-11-22 13:39:59,886 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-22 13:39:59,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 306 events. 75/306 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1368 event pairs, 6 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 236. Up to 32 conditions per place. [2024-11-22 13:39:59,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 131 transitions, 302 flow [2024-11-22 13:39:59,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 131 transitions, 302 flow [2024-11-22 13:39:59,891 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:39:59,891 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;@37f02b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:39:59,892 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 13:39:59,895 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:39:59,895 INFO L124 PetriNetUnfolderBase]: 9/58 cut-off events. [2024-11-22 13:39:59,895 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 13:39:59,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:39:59,895 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:39:59,896 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:39:59,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:39:59,896 INFO L85 PathProgramCache]: Analyzing trace with hash 720157135, now seen corresponding path program 1 times [2024-11-22 13:39:59,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:39:59,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451870606] [2024-11-22 13:39:59,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:39:59,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:39:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:39:59,921 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 13:39:59,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:39:59,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451870606] [2024-11-22 13:39:59,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451870606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:39:59,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:39:59,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:39:59,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515462239] [2024-11-22 13:39:59,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:39:59,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:39:59,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:39:59,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:39:59,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:39:59,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 131 [2024-11-22 13:39:59,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 131 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 13:39:59,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:39:59,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 131 [2024-11-22 13:39:59,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand