./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy6.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/test-easy6.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 69f73d75edf25d106d657bdc186907312ee3ef2bf4e5da547c0ac3641991b71d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:56:27,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:56:27,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:56:27,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:56:27,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:56:27,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:56:27,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:56:27,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:56:27,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:56:27,659 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:56:27,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:56:27,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:56:27,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:56:27,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:56:27,661 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:56:27,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:56:27,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:56:27,664 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:56:27,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:56:27,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:56:27,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:56:27,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:56:27,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:56:27,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:56:27,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:56:27,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:56:27,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:56:27,668 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:56:27,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:56:27,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:56:27,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:56:27,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:56:27,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:56:27,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:56:27,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:56:27,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:56:27,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:56:27,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:56:27,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:56:27,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:56:27,672 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:56:27,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:56:27,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:56:27,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f73d75edf25d106d657bdc186907312ee3ef2bf4e5da547c0ac3641991b71d [2024-01-27 15:56:27,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:56:27,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:56:27,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:56:27,944 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:56:27,944 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:56:27,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-01-27 15:56:29,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:56:29,369 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:56:29,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-01-27 15:56:29,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d78a216b/82a62ccbb4dd4ecc98c40d2a2d26839c/FLAG5fdc6eb4c [2024-01-27 15:56:29,389 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d78a216b/82a62ccbb4dd4ecc98c40d2a2d26839c [2024-01-27 15:56:29,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:56:29,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:56:29,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:56:29,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:56:29,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:56:29,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f173ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29, skipping insertion in model container [2024-01-27 15:56:29,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,424 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:56:29,633 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/test-easy6.wvr.c[3072,3085] [2024-01-27 15:56:29,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:56:29,648 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:56:29,666 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/test-easy6.wvr.c[3072,3085] [2024-01-27 15:56:29,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:56:29,688 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:56:29,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29 WrapperNode [2024-01-27 15:56:29,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:56:29,693 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:56:29,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:56:29,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:56:29,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,732 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2024-01-27 15:56:29,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:56:29,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:56:29,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:56:29,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:56:29,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,761 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 15:56:29,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,767 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:56:29,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:56:29,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:56:29,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:56:29,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (1/1) ... [2024-01-27 15:56:29,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:56:29,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:56:29,834 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 15:56:29,856 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 15:56:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:56:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:56:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:56:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:56:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:56:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:56:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:56:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:56:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:56:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:56:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:56:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:56:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:56:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:56:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:56:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:56:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:56:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:56:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:56:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:56:29,890 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 15:56:29,975 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:56:29,977 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:56:30,148 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:56:30,152 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:56:30,284 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:56:30,285 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:56:30,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:56:30 BoogieIcfgContainer [2024-01-27 15:56:30,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:56:30,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:56:30,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:56:30,293 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:56:30,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:56:29" (1/3) ... [2024-01-27 15:56:30,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c01869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:56:30, skipping insertion in model container [2024-01-27 15:56:30,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:56:29" (2/3) ... [2024-01-27 15:56:30,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c01869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:56:30, skipping insertion in model container [2024-01-27 15:56:30,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:56:30" (3/3) ... [2024-01-27 15:56:30,296 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2024-01-27 15:56:30,303 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:56:30,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:56:30,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:56:30,311 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:56:30,355 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 15:56:30,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 84 flow [2024-01-27 15:56:30,424 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2024-01-27 15:56:30,432 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:56:30,434 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 15:56:30,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 84 flow [2024-01-27 15:56:30,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 32 transitions, 76 flow [2024-01-27 15:56:30,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:56:30,461 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;@7bfa40e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:56:30,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 15:56:30,480 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:56:30,481 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-01-27 15:56:30,481 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:56:30,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:56:30,482 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 15:56:30,483 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 15:56:30,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:56:30,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1852700731, now seen corresponding path program 1 times [2024-01-27 15:56:30,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:56:30,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735994851] [2024-01-27 15:56:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:56:30,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:56:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:56:31,130 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 15:56:31,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:56:31,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735994851] [2024-01-27 15:56:31,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735994851] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:56:31,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:56:31,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:56:31,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696318618] [2024-01-27 15:56:31,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:56:31,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:56:31,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:56:31,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:56:31,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:56:31,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-01-27 15:56:31,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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 15:56:31,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:56:31,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-01-27 15:56:31,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:56:31,543 INFO L124 PetriNetUnfolderBase]: 133/339 cut-off events. [2024-01-27 15:56:31,546 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-01-27 15:56:31,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 339 events. 133/339 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1607 event pairs, 39 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 521. Up to 80 conditions per place. [2024-01-27 15:56:31,554 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 36 selfloop transitions, 6 changer transitions 12/67 dead transitions. [2024-01-27 15:56:31,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 67 transitions, 275 flow [2024-01-27 15:56:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:56:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:56:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-01-27 15:56:31,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-01-27 15:56:31,572 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 76 flow. Second operand 7 states and 160 transitions. [2024-01-27 15:56:31,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 67 transitions, 275 flow [2024-01-27 15:56:31,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 67 transitions, 253 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 15:56:31,583 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 103 flow [2024-01-27 15:56:31,585 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=7, PETRI_FLOW=103, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-01-27 15:56:31,589 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2024-01-27 15:56:31,589 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 103 flow [2024-01-27 15:56:31,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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 15:56:31,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:56:31,590 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 15:56:31,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:56:31,591 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 15:56:31,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:56:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1447345353, now seen corresponding path program 2 times [2024-01-27 15:56:31,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:56:31,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645933897] [2024-01-27 15:56:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:56:31,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:56:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:56:31,790 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 15:56:31,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:56:31,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645933897] [2024-01-27 15:56:31,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645933897] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:56:31,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:56:31,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:56:31,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255838349] [2024-01-27 15:56:31,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:56:31,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:56:31,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:56:31,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:56:31,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:56:31,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-27 15:56:31,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 103 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 15:56:31,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:56:31,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-27 15:56:31,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:56:32,040 INFO L124 PetriNetUnfolderBase]: 325/778 cut-off events. [2024-01-27 15:56:32,041 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-01-27 15:56:32,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 778 events. 325/778 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4318 event pairs, 57 based on Foata normal form. 6/771 useless extension candidates. Maximal degree in co-relation 1515. Up to 158 conditions per place. [2024-01-27 15:56:32,051 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 54 selfloop transitions, 15 changer transitions 3/87 dead transitions. [2024-01-27 15:56:32,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 87 transitions, 356 flow [2024-01-27 15:56:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:56:32,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:56:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-01-27 15:56:32,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-01-27 15:56:32,056 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 103 flow. Second operand 9 states and 190 transitions. [2024-01-27 15:56:32,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 87 transitions, 356 flow [2024-01-27 15:56:32,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 87 transitions, 352 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:56:32,064 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 182 flow [2024-01-27 15:56:32,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=182, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-01-27 15:56:32,065 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-01-27 15:56:32,065 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 182 flow [2024-01-27 15:56:32,066 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 15:56:32,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:56:32,066 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 15:56:32,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:56:32,066 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 15:56:32,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:56:32,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1488282989, now seen corresponding path program 3 times [2024-01-27 15:56:32,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:56:32,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427260077] [2024-01-27 15:56:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:56:32,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:56:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:56:32,168 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 15:56:32,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:56:32,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427260077] [2024-01-27 15:56:32,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427260077] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:56:32,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:56:32,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:56:32,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358934189] [2024-01-27 15:56:32,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:56:32,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:56:32,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:56:32,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:56:32,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:56:32,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2024-01-27 15:56:32,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 15:56:32,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:56:32,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2024-01-27 15:56:32,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:56:32,280 INFO L124 PetriNetUnfolderBase]: 192/600 cut-off events. [2024-01-27 15:56:32,280 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-01-27 15:56:32,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 600 events. 192/600 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3671 event pairs, 154 based on Foata normal form. 6/569 useless extension candidates. Maximal degree in co-relation 515. Up to 354 conditions per place. [2024-01-27 15:56:32,285 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 20 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-01-27 15:56:32,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 237 flow [2024-01-27 15:56:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:56:32,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:56:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-01-27 15:56:32,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2024-01-27 15:56:32,287 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 182 flow. Second operand 3 states and 74 transitions. [2024-01-27 15:56:32,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 237 flow [2024-01-27 15:56:32,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 237 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:56:32,294 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 190 flow [2024-01-27 15:56:32,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-01-27 15:56:32,295 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2024-01-27 15:56:32,296 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 190 flow [2024-01-27 15:56:32,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 15:56:32,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:56:32,296 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 15:56:32,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:56:32,297 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 15:56:32,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:56:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1707113003, now seen corresponding path program 4 times [2024-01-27 15:56:32,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:56:32,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613456774] [2024-01-27 15:56:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:56:32,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:56:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:56:32,440 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 15:56:32,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:56:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613456774] [2024-01-27 15:56:32,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613456774] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:56:32,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:56:32,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:56:32,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472579245] [2024-01-27 15:56:32,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:56:32,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:56:32,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:56:32,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:56:32,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:56:32,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-01-27 15:56:32,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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 15:56:32,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:56:32,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-01-27 15:56:32,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:56:32,615 INFO L124 PetriNetUnfolderBase]: 302/720 cut-off events. [2024-01-27 15:56:32,616 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-01-27 15:56:32,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1724 conditions, 720 events. 302/720 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3971 event pairs, 106 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 741. Up to 186 conditions per place. [2024-01-27 15:56:32,621 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 24 selfloop transitions, 5 changer transitions 22/73 dead transitions. [2024-01-27 15:56:32,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 342 flow [2024-01-27 15:56:32,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:56:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:56:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-01-27 15:56:32,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6244897959183674 [2024-01-27 15:56:32,623 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 190 flow. Second operand 7 states and 153 transitions. [2024-01-27 15:56:32,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 342 flow [2024-01-27 15:56:32,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:56:32,626 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 169 flow [2024-01-27 15:56:32,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=169, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2024-01-27 15:56:32,627 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2024-01-27 15:56:32,627 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 169 flow [2024-01-27 15:56:32,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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 15:56:32,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:56:32,628 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 15:56:32,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:56:32,628 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 15:56:32,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:56:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1021096881, now seen corresponding path program 5 times [2024-01-27 15:56:32,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:56:32,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906888657] [2024-01-27 15:56:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:56:32,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:56:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:56:32,782 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 15:56:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:56:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906888657] [2024-01-27 15:56:32,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906888657] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:56:32,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:56:32,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:56:32,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875347671] [2024-01-27 15:56:32,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:56:32,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:56:32,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:56:32,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:56:32,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:56:32,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-27 15:56:32,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 169 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 15:56:32,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:56:32,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-27 15:56:32,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:56:33,018 INFO L124 PetriNetUnfolderBase]: 274/687 cut-off events. [2024-01-27 15:56:33,019 INFO L125 PetriNetUnfolderBase]: For 361/382 co-relation queries the response was YES. [2024-01-27 15:56:33,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 687 events. 274/687 cut-off events. For 361/382 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3651 event pairs, 59 based on Foata normal form. 19/697 useless extension candidates. Maximal degree in co-relation 1637. Up to 209 conditions per place. [2024-01-27 15:56:33,024 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 47 selfloop transitions, 8 changer transitions 13/81 dead transitions. [2024-01-27 15:56:33,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 409 flow [2024-01-27 15:56:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:56:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:56:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-01-27 15:56:33,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-01-27 15:56:33,026 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 169 flow. Second operand 8 states and 172 transitions. [2024-01-27 15:56:33,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 409 flow [2024-01-27 15:56:33,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 81 transitions, 386 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-01-27 15:56:33,029 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 162 flow [2024-01-27 15:56:33,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2024-01-27 15:56:33,030 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2024-01-27 15:56:33,030 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 162 flow [2024-01-27 15:56:33,031 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 15:56:33,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:56:33,031 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 15:56:33,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:56:33,032 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 15:56:33,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:56:33,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1868201497, now seen corresponding path program 6 times [2024-01-27 15:56:33,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:56:33,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470997699] [2024-01-27 15:56:33,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:56:33,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:56:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:56:33,104 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 15:56:33,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:56:33,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470997699] [2024-01-27 15:56:33,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470997699] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:56:33,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:56:33,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:56:33,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121369430] [2024-01-27 15:56:33,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:56:33,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:56:33,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:56:33,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:56:33,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:56:33,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2024-01-27 15:56:33,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 15:56:33,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:56:33,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2024-01-27 15:56:33,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:56:33,171 INFO L124 PetriNetUnfolderBase]: 139/450 cut-off events. [2024-01-27 15:56:33,172 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-01-27 15:56:33,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 450 events. 139/450 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2487 event pairs, 117 based on Foata normal form. 3/428 useless extension candidates. Maximal degree in co-relation 830. Up to 283 conditions per place. [2024-01-27 15:56:33,175 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 19 selfloop transitions, 2 changer transitions 1/46 dead transitions. [2024-01-27 15:56:33,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 46 transitions, 219 flow [2024-01-27 15:56:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:56:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:56:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-01-27 15:56:33,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2024-01-27 15:56:33,176 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 162 flow. Second operand 3 states and 74 transitions. [2024-01-27 15:56:33,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 46 transitions, 219 flow [2024-01-27 15:56:33,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 192 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-01-27 15:56:33,178 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 145 flow [2024-01-27 15:56:33,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-01-27 15:56:33,179 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-01-27 15:56:33,179 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 145 flow [2024-01-27 15:56:33,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 15:56:33,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:56:33,180 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 15:56:33,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:56:33,180 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 15:56:33,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:56:33,181 INFO L85 PathProgramCache]: Analyzing trace with hash 853079517, now seen corresponding path program 7 times [2024-01-27 15:56:33,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:56:33,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413439407] [2024-01-27 15:56:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:56:33,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:56:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:56:33,307 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 15:56:33,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:56:33,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413439407] [2024-01-27 15:56:33,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413439407] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:56:33,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:56:33,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:56:33,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521975654] [2024-01-27 15:56:33,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:56:33,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:56:33,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:56:33,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:56:33,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:56:33,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-27 15:56:33,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 145 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 15:56:33,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:56:33,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-27 15:56:33,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:56:33,441 INFO L124 PetriNetUnfolderBase]: 143/362 cut-off events. [2024-01-27 15:56:33,442 INFO L125 PetriNetUnfolderBase]: For 125/133 co-relation queries the response was YES. [2024-01-27 15:56:33,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 362 events. 143/362 cut-off events. For 125/133 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1538 event pairs, 49 based on Foata normal form. 6/359 useless extension candidates. Maximal degree in co-relation 332. Up to 207 conditions per place. [2024-01-27 15:56:33,444 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 23 selfloop transitions, 3 changer transitions 12/51 dead transitions. [2024-01-27 15:56:33,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 245 flow [2024-01-27 15:56:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:56:33,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:56:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-01-27 15:56:33,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885714285714285 [2024-01-27 15:56:33,446 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 145 flow. Second operand 5 states and 103 transitions. [2024-01-27 15:56:33,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 245 flow [2024-01-27 15:56:33,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:56:33,449 INFO L231 Difference]: Finished difference. Result has 53 places, 35 transitions, 123 flow [2024-01-27 15:56:33,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2024-01-27 15:56:33,451 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-01-27 15:56:33,451 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 123 flow [2024-01-27 15:56:33,452 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 15:56:33,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:56:33,452 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 15:56:33,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:56:33,453 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 15:56:33,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:56:33,453 INFO L85 PathProgramCache]: Analyzing trace with hash 156580395, now seen corresponding path program 8 times [2024-01-27 15:56:33,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:56:33,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758811952] [2024-01-27 15:56:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:56:33,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:56:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:56:33,595 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 15:56:33,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:56:33,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758811952] [2024-01-27 15:56:33,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758811952] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:56:33,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:56:33,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:56:33,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341412138] [2024-01-27 15:56:33,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:56:33,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:56:33,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:56:33,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:56:33,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:56:33,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-27 15:56:33,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 123 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 15:56:33,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:56:33,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-27 15:56:33,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:56:33,681 INFO L124 PetriNetUnfolderBase]: 37/102 cut-off events. [2024-01-27 15:56:33,681 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-01-27 15:56:33,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 102 events. 37/102 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 284 event pairs, 5 based on Foata normal form. 6/105 useless extension candidates. Maximal degree in co-relation 186. Up to 26 conditions per place. [2024-01-27 15:56:33,682 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-01-27 15:56:33,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 33 transitions, 160 flow [2024-01-27 15:56:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:56:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:56:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-01-27 15:56:33,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2024-01-27 15:56:33,686 INFO L175 Difference]: Start difference. First operand has 53 places, 35 transitions, 123 flow. Second operand 7 states and 117 transitions. [2024-01-27 15:56:33,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 33 transitions, 160 flow [2024-01-27 15:56:33,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 141 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-01-27 15:56:33,688 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-01-27 15:56:33,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-01-27 15:56:33,691 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2024-01-27 15:56:33,692 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-01-27 15:56:33,692 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 15:56:33,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-01-27 15:56:33,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-01-27 15:56:33,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-01-27 15:56:33,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:56:33,696 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2024-01-27 15:56:33,699 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:56:33,699 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:56:33,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:56:33 BasicIcfg [2024-01-27 15:56:33,711 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:56:33,711 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:56:33,711 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:56:33,711 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:56:33,712 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:56:30" (3/4) ... [2024-01-27 15:56:33,714 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:56:33,717 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:56:33,717 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:56:33,723 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2024-01-27 15:56:33,723 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-01-27 15:56:33,724 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-01-27 15:56:33,724 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:56:33,804 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:56:33,805 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:56:33,805 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:56:33,806 INFO L158 Benchmark]: Toolchain (without parser) took 4413.75ms. Allocated memory was 184.5MB in the beginning and 239.1MB in the end (delta: 54.5MB). Free memory was 113.4MB in the beginning and 188.6MB in the end (delta: -75.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:56:33,806 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 184.5MB. Free memory is still 159.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:56:33,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.44ms. Allocated memory is still 184.5MB. Free memory was 113.2MB in the beginning and 149.2MB in the end (delta: -36.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-01-27 15:56:33,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.29ms. Allocated memory is still 184.5MB. Free memory was 149.2MB in the beginning and 147.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:56:33,807 INFO L158 Benchmark]: Boogie Preprocessor took 52.16ms. Allocated memory is still 184.5MB. Free memory was 147.4MB in the beginning and 145.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:56:33,807 INFO L158 Benchmark]: RCFGBuilder took 498.95ms. Allocated memory is still 184.5MB. Free memory was 145.4MB in the beginning and 120.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-27 15:56:33,807 INFO L158 Benchmark]: TraceAbstraction took 3421.08ms. Allocated memory was 184.5MB in the beginning and 239.1MB in the end (delta: 54.5MB). Free memory was 119.8MB in the beginning and 193.8MB in the end (delta: -74.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:56:33,808 INFO L158 Benchmark]: Witness Printer took 93.97ms. Allocated memory is still 239.1MB. Free memory was 193.8MB in the beginning and 188.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:56:33,810 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 184.5MB. Free memory is still 159.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.44ms. Allocated memory is still 184.5MB. Free memory was 113.2MB in the beginning and 149.2MB in the end (delta: -36.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.29ms. Allocated memory is still 184.5MB. Free memory was 149.2MB in the beginning and 147.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.16ms. Allocated memory is still 184.5MB. Free memory was 147.4MB in the beginning and 145.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 498.95ms. Allocated memory is still 184.5MB. Free memory was 145.4MB in the beginning and 120.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3421.08ms. Allocated memory was 184.5MB in the beginning and 239.1MB in the end (delta: 54.5MB). Free memory was 119.8MB in the beginning and 193.8MB in the end (delta: -74.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 93.97ms. Allocated memory is still 239.1MB. Free memory was 193.8MB in the beginning and 188.6MB 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: 116]: 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: 3.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 376 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 361 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 913 IncrementalHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 36 mSDtfsCounter, 913 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=3, InterpolantAutomatonStates: 49, 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, 744 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 15:56:33,852 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