./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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 ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c -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 1cae81f1fa2e32e73e0569957bc583bbf3478ffc71be87871acb9920c44bcfd4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:29:46,859 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:29:46,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:29:46,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:29:46,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:29:46,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:29:46,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:29:46,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:29:46,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:29:46,974 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:29:46,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:29:46,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:29:46,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:29:46,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:29:46,975 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:29:46,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:29:46,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:29:46,977 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:29:46,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:29:46,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:29:46,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:29:46,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:29:46,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:29:46,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:29:46,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:29:46,987 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:29:46,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:29:46,988 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:29:46,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:29:46,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:29:46,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:29:46,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:29:46,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:29:46,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:29:46,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:29:46,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:29:46,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:29:46,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:29:46,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:29:46,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:29:46,991 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:29:46,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:29:46,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:29:46,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cae81f1fa2e32e73e0569957bc583bbf3478ffc71be87871acb9920c44bcfd4 [2024-01-27 15:29:47,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:29:47,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:29:47,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:29:47,278 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:29:47,279 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:29:47,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2024-01-27 15:29:48,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:29:48,664 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:29:48,667 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2024-01-27 15:29:48,674 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76b03f193/b7e31a252898491cbf97a9e7cf59b9e9/FLAG263619577 [2024-01-27 15:29:48,684 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76b03f193/b7e31a252898491cbf97a9e7cf59b9e9 [2024-01-27 15:29:48,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:29:48,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:29:48,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:29:48,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:29:48,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:29:48,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:48,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac50423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48, skipping insertion in model container [2024-01-27 15:29:48,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:48,728 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:29:48,874 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3538,3551] [2024-01-27 15:29:48,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:29:48,888 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:29:48,910 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3538,3551] [2024-01-27 15:29:48,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:29:48,930 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:29:48,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48 WrapperNode [2024-01-27 15:29:48,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:29:48,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:29:48,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:29:48,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:29:48,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:48,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:48,981 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 156 [2024-01-27 15:29:48,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:29:48,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:29:48,983 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:29:48,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:29:48,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:48,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:49,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:49,021 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-27 15:29:49,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:49,027 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:49,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:49,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:49,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:49,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:49,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:29:49,042 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:29:49,042 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:29:49,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:29:49,043 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (1/1) ... [2024-01-27 15:29:49,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:29:49,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:49,074 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) [2024-01-27 15:29:49,085 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 [2024-01-27 15:29:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:29:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:29:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:29:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:29:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:29:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:29:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:29:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:29:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:29:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:29:49,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:29:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:29:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:29:49,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:29:49,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:29:49,127 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:29:49,213 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:29:49,215 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:29:49,396 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:29:49,396 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:29:49,561 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:29:49,561 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:29:49,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:49 BoogieIcfgContainer [2024-01-27 15:29:49,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:29:49,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:29:49,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:29:49,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:29:49,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:29:48" (1/3) ... [2024-01-27 15:29:49,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e56b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:29:49, skipping insertion in model container [2024-01-27 15:29:49,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:48" (2/3) ... [2024-01-27 15:29:49,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e56b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:29:49, skipping insertion in model container [2024-01-27 15:29:49,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:49" (3/3) ... [2024-01-27 15:29:49,572 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2024-01-27 15:29:49,579 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:29:49,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:29:49,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:29:49,588 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:29:49,635 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 15:29:49,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 84 flow [2024-01-27 15:29:49,694 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2024-01-27 15:29:49,694 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:29:49,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 0/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-27 15:29:49,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 84 flow [2024-01-27 15:29:49,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 32 transitions, 76 flow [2024-01-27 15:29:49,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:29:49,713 INFO L357 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, mHoare=true, 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;@3edf6bf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:29:49,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 15:29:49,741 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:29:49,741 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-01-27 15:29:49,742 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:29:49,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:49,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:49,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:49,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:49,754 INFO L85 PathProgramCache]: Analyzing trace with hash 423839951, now seen corresponding path program 1 times [2024-01-27 15:29:49,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:49,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372204953] [2024-01-27 15:29:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:49,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:50,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372204953] [2024-01-27 15:29:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372204953] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:50,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:50,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:29:50,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488895348] [2024-01-27 15:29:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:50,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:29:50,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:50,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:29:50,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:29:50,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-27 15:29:50,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-01-27 15:29:50,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:50,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-27 15:29:50,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:50,743 INFO L124 PetriNetUnfolderBase]: 172/413 cut-off events. [2024-01-27 15:29:50,743 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-01-27 15:29:50,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 413 events. 172/413 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2022 event pairs, 63 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 658. Up to 102 conditions per place. [2024-01-27 15:29:50,752 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 44 selfloop transitions, 7 changer transitions 13/75 dead transitions. [2024-01-27 15:29:50,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 75 transitions, 311 flow [2024-01-27 15:29:50,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:29:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:29:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-01-27 15:29:50,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-01-27 15:29:50,769 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 76 flow. Second operand 8 states and 169 transitions. [2024-01-27 15:29:50,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 75 transitions, 311 flow [2024-01-27 15:29:50,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 75 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:50,775 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 106 flow [2024-01-27 15:29:50,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-01-27 15:29:50,781 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-01-27 15:29:50,781 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 106 flow [2024-01-27 15:29:50,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-01-27 15:29:50,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:50,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:50,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:29:50,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:50,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1457327301, now seen corresponding path program 2 times [2024-01-27 15:29:50,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:50,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709034814] [2024-01-27 15:29:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:50,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:50,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:50,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709034814] [2024-01-27 15:29:50,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709034814] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:50,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:50,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:29:50,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743458252] [2024-01-27 15:29:50,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:50,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:29:50,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:50,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:29:50,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:29:50,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-27 15:29:50,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-01-27 15:29:50,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:50,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-27 15:29:50,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:51,152 INFO L124 PetriNetUnfolderBase]: 158/376 cut-off events. [2024-01-27 15:29:51,152 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-01-27 15:29:51,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 376 events. 158/376 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1757 event pairs, 49 based on Foata normal form. 1/364 useless extension candidates. Maximal degree in co-relation 789. Up to 98 conditions per place. [2024-01-27 15:29:51,167 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 32 selfloop transitions, 6 changer transitions 24/73 dead transitions. [2024-01-27 15:29:51,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 317 flow [2024-01-27 15:29:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:29:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:29:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-01-27 15:29:51,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-01-27 15:29:51,172 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 106 flow. Second operand 8 states and 166 transitions. [2024-01-27 15:29:51,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 317 flow [2024-01-27 15:29:51,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 313 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:51,177 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 105 flow [2024-01-27 15:29:51,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=105, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2024-01-27 15:29:51,178 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2024-01-27 15:29:51,178 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 105 flow [2024-01-27 15:29:51,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-01-27 15:29:51,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:51,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:51,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:29:51,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:51,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:51,184 INFO L85 PathProgramCache]: Analyzing trace with hash -502015573, now seen corresponding path program 3 times [2024-01-27 15:29:51,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:51,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144353473] [2024-01-27 15:29:51,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:51,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:51,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:51,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144353473] [2024-01-27 15:29:51,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144353473] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:51,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:51,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:51,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782489679] [2024-01-27 15:29:51,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:51,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:29:51,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:51,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:29:51,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:29:51,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-27 15:29:51,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-01-27 15:29:51,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:51,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-27 15:29:51,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:51,549 INFO L124 PetriNetUnfolderBase]: 150/377 cut-off events. [2024-01-27 15:29:51,549 INFO L125 PetriNetUnfolderBase]: For 22/24 co-relation queries the response was YES. [2024-01-27 15:29:51,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 377 events. 150/377 cut-off events. For 22/24 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1654 event pairs, 32 based on Foata normal form. 6/376 useless extension candidates. Maximal degree in co-relation 762. Up to 164 conditions per place. [2024-01-27 15:29:51,552 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 30 selfloop transitions, 5 changer transitions 11/59 dead transitions. [2024-01-27 15:29:51,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 248 flow [2024-01-27 15:29:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:29:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:29:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-01-27 15:29:51,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-01-27 15:29:51,555 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 105 flow. Second operand 6 states and 125 transitions. [2024-01-27 15:29:51,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 248 flow [2024-01-27 15:29:51,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 227 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-01-27 15:29:51,560 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 115 flow [2024-01-27 15:29:51,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-01-27 15:29:51,561 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2024-01-27 15:29:51,561 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 115 flow [2024-01-27 15:29:51,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-01-27 15:29:51,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:51,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:51,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:29:51,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:51,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:51,563 INFO L85 PathProgramCache]: Analyzing trace with hash 18066053, now seen corresponding path program 4 times [2024-01-27 15:29:51,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:51,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823566601] [2024-01-27 15:29:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:51,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:51,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:51,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823566601] [2024-01-27 15:29:51,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823566601] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:51,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:51,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:51,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659475449] [2024-01-27 15:29:51,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:51,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:51,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:51,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:51,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:51,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-01-27 15:29:51,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-01-27 15:29:51,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:51,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-01-27 15:29:51,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:51,675 INFO L124 PetriNetUnfolderBase]: 84/252 cut-off events. [2024-01-27 15:29:51,675 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-01-27 15:29:51,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 252 events. 84/252 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1114 event pairs, 62 based on Foata normal form. 8/253 useless extension candidates. Maximal degree in co-relation 283. Up to 156 conditions per place. [2024-01-27 15:29:51,677 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 21 selfloop transitions, 2 changer transitions 2/41 dead transitions. [2024-01-27 15:29:51,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 179 flow [2024-01-27 15:29:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:51,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-01-27 15:29:51,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2024-01-27 15:29:51,678 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 115 flow. Second operand 3 states and 68 transitions. [2024-01-27 15:29:51,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 179 flow [2024-01-27 15:29:51,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:51,680 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 118 flow [2024-01-27 15:29:51,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-01-27 15:29:51,680 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-01-27 15:29:51,681 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 118 flow [2024-01-27 15:29:51,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-01-27 15:29:51,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:51,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:51,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:29:51,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:51,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:51,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1960190829, now seen corresponding path program 5 times [2024-01-27 15:29:51,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:51,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067539430] [2024-01-27 15:29:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:51,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:51,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:51,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067539430] [2024-01-27 15:29:51,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067539430] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:51,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:51,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:29:51,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660772829] [2024-01-27 15:29:51,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:51,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:29:51,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:29:51,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:29:51,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-01-27 15:29:51,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-01-27 15:29:51,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:51,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-01-27 15:29:51,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:52,013 INFO L124 PetriNetUnfolderBase]: 89/253 cut-off events. [2024-01-27 15:29:52,013 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-01-27 15:29:52,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 253 events. 89/253 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 968 event pairs, 39 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 355. Up to 137 conditions per place. [2024-01-27 15:29:52,015 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 19 selfloop transitions, 2 changer transitions 16/51 dead transitions. [2024-01-27 15:29:52,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 225 flow [2024-01-27 15:29:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:29:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:29:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-01-27 15:29:52,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2024-01-27 15:29:52,017 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 118 flow. Second operand 7 states and 137 transitions. [2024-01-27 15:29:52,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 225 flow [2024-01-27 15:29:52,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 219 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:52,022 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 108 flow [2024-01-27 15:29:52,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=108, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2024-01-27 15:29:52,025 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-01-27 15:29:52,026 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 108 flow [2024-01-27 15:29:52,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-01-27 15:29:52,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:52,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:52,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:29:52,026 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:52,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:52,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1726474337, now seen corresponding path program 6 times [2024-01-27 15:29:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:52,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618811360] [2024-01-27 15:29:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:52,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:52,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:52,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618811360] [2024-01-27 15:29:52,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618811360] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:52,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:52,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:52,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539393359] [2024-01-27 15:29:52,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:52,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:52,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:52,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:52,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:52,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-01-27 15:29:52,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-01-27 15:29:52,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:52,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-01-27 15:29:52,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:52,128 INFO L124 PetriNetUnfolderBase]: 53/165 cut-off events. [2024-01-27 15:29:52,129 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-01-27 15:29:52,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 165 events. 53/165 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 511 event pairs, 34 based on Foata normal form. 4/165 useless extension candidates. Maximal degree in co-relation 343. Up to 92 conditions per place. [2024-01-27 15:29:52,130 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 22 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-01-27 15:29:52,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 175 flow [2024-01-27 15:29:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:52,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-01-27 15:29:52,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-01-27 15:29:52,132 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 108 flow. Second operand 3 states and 70 transitions. [2024-01-27 15:29:52,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 175 flow [2024-01-27 15:29:52,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 158 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-27 15:29:52,135 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 104 flow [2024-01-27 15:29:52,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-01-27 15:29:52,138 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-01-27 15:29:52,138 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 104 flow [2024-01-27 15:29:52,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-01-27 15:29:52,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:52,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:52,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:29:52,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:52,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1536553463, now seen corresponding path program 7 times [2024-01-27 15:29:52,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:52,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576084151] [2024-01-27 15:29:52,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:52,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:52,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:52,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576084151] [2024-01-27 15:29:52,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576084151] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:52,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:52,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:52,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205292212] [2024-01-27 15:29:52,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:52,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:29:52,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:29:52,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:29:52,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-27 15:29:52,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-01-27 15:29:52,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:52,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-27 15:29:52,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:52,398 INFO L124 PetriNetUnfolderBase]: 85/232 cut-off events. [2024-01-27 15:29:52,398 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-01-27 15:29:52,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 232 events. 85/232 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 823 event pairs, 28 based on Foata normal form. 8/234 useless extension candidates. Maximal degree in co-relation 198. Up to 73 conditions per place. [2024-01-27 15:29:52,400 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 23 selfloop transitions, 4 changer transitions 9/49 dead transitions. [2024-01-27 15:29:52,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 219 flow [2024-01-27 15:29:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:29:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:29:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-01-27 15:29:52,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-01-27 15:29:52,401 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 104 flow. Second operand 6 states and 116 transitions. [2024-01-27 15:29:52,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 219 flow [2024-01-27 15:29:52,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:52,403 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 116 flow [2024-01-27 15:29:52,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2024-01-27 15:29:52,404 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-01-27 15:29:52,404 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 116 flow [2024-01-27 15:29:52,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-01-27 15:29:52,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:52,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:52,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:29:52,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:52,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:52,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1368556831, now seen corresponding path program 8 times [2024-01-27 15:29:52,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:52,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092274979] [2024-01-27 15:29:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:52,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:52,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:52,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092274979] [2024-01-27 15:29:52,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092274979] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:52,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:52,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:29:52,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042896131] [2024-01-27 15:29:52,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:52,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:29:52,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:52,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:29:52,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:29:52,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-27 15:29:52,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 116 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 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) [2024-01-27 15:29:52,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:52,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-27 15:29:52,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:52,664 INFO L124 PetriNetUnfolderBase]: 25/86 cut-off events. [2024-01-27 15:29:52,664 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-01-27 15:29:52,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 86 events. 25/86 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 244 event pairs, 9 based on Foata normal form. 4/86 useless extension candidates. Maximal degree in co-relation 188. Up to 20 conditions per place. [2024-01-27 15:29:52,665 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-01-27 15:29:52,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 29 transitions, 144 flow [2024-01-27 15:29:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:29:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:29:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-01-27 15:29:52,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2024-01-27 15:29:52,666 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 116 flow. Second operand 7 states and 114 transitions. [2024-01-27 15:29:52,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 29 transitions, 144 flow [2024-01-27 15:29:52,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 130 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-27 15:29:52,668 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2024-01-27 15:29:52,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2024-01-27 15:29:52,669 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2024-01-27 15:29:52,670 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2024-01-27 15:29:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 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) [2024-01-27 15:29:52,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-01-27 15:29:52,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-01-27 15:29:52,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-01-27 15:29:52,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:29:52,673 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2024-01-27 15:29:52,676 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:29:52,676 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:29:52,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:29:52 BasicIcfg [2024-01-27 15:29:52,688 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:29:52,689 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:29:52,689 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:29:52,689 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:29:52,689 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:49" (3/4) ... [2024-01-27 15:29:52,691 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:29:52,694 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:29:52,694 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:29:52,701 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 74 nodes and edges [2024-01-27 15:29:52,701 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-01-27 15:29:52,701 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-01-27 15:29:52,701 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:29:52,784 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:29:52,784 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:29:52,785 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:29:52,785 INFO L158 Benchmark]: Toolchain (without parser) took 4098.25ms. Allocated memory was 172.0MB in the beginning and 226.5MB in the end (delta: 54.5MB). Free memory was 114.8MB in the beginning and 155.0MB in the end (delta: -40.2MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2024-01-27 15:29:52,785 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 172.0MB. Free memory is still 135.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:29:52,786 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.20ms. Allocated memory is still 172.0MB. Free memory was 114.1MB in the beginning and 102.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 15:29:52,786 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.07ms. Allocated memory is still 172.0MB. Free memory was 102.2MB in the beginning and 100.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:29:52,786 INFO L158 Benchmark]: Boogie Preprocessor took 59.18ms. Allocated memory is still 172.0MB. Free memory was 100.1MB in the beginning and 98.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:29:52,786 INFO L158 Benchmark]: RCFGBuilder took 520.01ms. Allocated memory is still 172.0MB. Free memory was 98.1MB in the beginning and 63.8MB in the end (delta: 34.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-01-27 15:29:52,787 INFO L158 Benchmark]: TraceAbstraction took 3124.45ms. Allocated memory was 172.0MB in the beginning and 226.5MB in the end (delta: 54.5MB). Free memory was 63.1MB in the beginning and 160.2MB in the end (delta: -97.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:29:52,787 INFO L158 Benchmark]: Witness Printer took 95.89ms. Allocated memory is still 226.5MB. Free memory was 160.2MB in the beginning and 155.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:29:52,789 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 172.0MB. Free memory is still 135.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.20ms. Allocated memory is still 172.0MB. Free memory was 114.1MB in the beginning and 102.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.07ms. Allocated memory is still 172.0MB. Free memory was 102.2MB in the beginning and 100.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.18ms. Allocated memory is still 172.0MB. Free memory was 100.1MB in the beginning and 98.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 520.01ms. Allocated memory is still 172.0MB. Free memory was 98.1MB in the beginning and 63.8MB in the end (delta: 34.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3124.45ms. Allocated memory was 172.0MB in the beginning and 226.5MB in the end (delta: 54.5MB). Free memory was 63.1MB in the beginning and 160.2MB in the end (delta: -97.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 95.89ms. Allocated memory is still 226.5MB. Free memory was 160.2MB in the beginning and 155.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 130]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 62 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 170 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1029 IncrementalHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 6 mSDtfsCounter, 1029 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=4, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 860 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:29:52,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE