./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe023_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe023_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 21:51:17,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:51:17,753 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:51:17,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:51:17,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:51:17,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:51:17,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:51:17,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:51:17,791 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:51:17,794 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:51:17,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:51:17,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:51:17,795 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:51:17,796 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:51:17,796 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:51:17,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:51:17,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:51:17,797 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:51:17,797 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:51:17,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:51:17,798 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:51:17,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:51:17,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:51:17,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:51:17,799 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:51:17,799 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:51:17,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:51:17,800 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:51:17,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:51:17,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:51:17,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:51:17,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:51:17,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:51:17,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:51:17,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:51:17,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:51:17,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:51:17,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:51:17,802 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:51:17,803 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:51:17,803 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:51:17,803 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:51:17,803 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:51:17,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:51:18,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:51:18,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:51:18,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:51:18,039 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:51:18,040 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:51:18,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe023_tso.yml/witness.yml [2024-06-27 21:51:18,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:51:18,110 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:51:18,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2024-06-27 21:51:18,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:51:19,229 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:51:19,232 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2024-06-27 21:51:19,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91141092c/c03f2aaf58024cada7a7fa40661da52d/FLAG16a3d74e6 [2024-06-27 21:51:19,266 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91141092c/c03f2aaf58024cada7a7fa40661da52d [2024-06-27 21:51:19,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:51:19,267 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:51:19,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:51:19,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:51:19,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:51:19,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:51:18" (1/2) ... [2024-06-27 21:51:19,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6632b1eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:19, skipping insertion in model container [2024-06-27 21:51:19,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:51:18" (1/2) ... [2024-06-27 21:51:19,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56f8c83 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:19, skipping insertion in model container [2024-06-27 21:51:19,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:51:19" (2/2) ... [2024-06-27 21:51:19,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6632b1eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19, skipping insertion in model container [2024-06-27 21:51:19,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:51:19" (2/2) ... [2024-06-27 21:51:19,278 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:51:19,297 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:51:19,298 INFO L97 edCorrectnessWitness]: Location invariant before [L785-L785] ! multithreaded || (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL [2024-06-27 21:51:19,298 INFO L97 edCorrectnessWitness]: Location invariant before [L783-L783] ! multithreaded || (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL [2024-06-27 21:51:19,299 INFO L97 edCorrectnessWitness]: Location invariant before [L786-L786] ! multithreaded || (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL [2024-06-27 21:51:19,299 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:51:19,299 INFO L106 edCorrectnessWitness]: ghost_update [L781-L781] multithreaded = 1; [2024-06-27 21:51:19,338 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:51:19,487 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i[945,958] [2024-06-27 21:51:19,619 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:51:19,626 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 21:51:19,657 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:51:19,684 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:51:19,711 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:51:19,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19 WrapperNode [2024-06-27 21:51:19,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:51:19,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:51:19,713 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:51:19,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:51:19,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,725 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,739 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-06-27 21:51:19,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:51:19,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:51:19,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:51:19,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:51:19,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,749 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,770 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 21:51:19,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:51:19,799 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:51:19,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:51:19,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:51:19,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (1/1) ... [2024-06-27 21:51:19,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:51:19,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:51:19,858 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) [2024-06-27 21:51:19,874 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 [2024-06-27 21:51:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:51:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:51:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 21:51:19,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 21:51:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 21:51:19,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 21:51:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 21:51:19,889 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 21:51:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:51:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:51:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:51:19,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:51:19,891 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 21:51:20,015 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:51:20,018 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:51:20,188 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:51:20,188 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:51:20,263 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:51:20,264 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 21:51:20,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:51:20 BoogieIcfgContainer [2024-06-27 21:51:20,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:51:20,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:51:20,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:51:20,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:51:20,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:51:18" (1/4) ... [2024-06-27 21:51:20,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebf3466 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:51:20, skipping insertion in model container [2024-06-27 21:51:20,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:51:19" (2/4) ... [2024-06-27 21:51:20,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebf3466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:51:20, skipping insertion in model container [2024-06-27 21:51:20,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:19" (3/4) ... [2024-06-27 21:51:20,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebf3466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:51:20, skipping insertion in model container [2024-06-27 21:51:20,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:51:20" (4/4) ... [2024-06-27 21:51:20,273 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_tso.i [2024-06-27 21:51:20,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:51:20,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 21:51:20,286 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:51:20,324 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 21:51:20,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 21:51:20,382 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 21:51:20,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:51:20,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 21:51:20,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 21:51:20,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 40 transitions, 89 flow [2024-06-27 21:51:20,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:51:20,406 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=false, 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;@4655715, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:51:20,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 21:51:20,412 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:51:20,412 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 21:51:20,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:51:20,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:20,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:51:20,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:20,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:20,417 INFO L85 PathProgramCache]: Analyzing trace with hash 209466946, now seen corresponding path program 1 times [2024-06-27 21:51:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:20,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582403050] [2024-06-27 21:51:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:20,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:20,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582403050] [2024-06-27 21:51:20,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582403050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:20,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 21:51:20,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222212212] [2024-06-27 21:51:20,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:20,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:51:20,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:20,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:51:20,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:51:20,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-06-27 21:51:20,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-06-27 21:51:20,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:20,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-06-27 21:51:20,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:20,760 INFO L124 PetriNetUnfolderBase]: 109/283 cut-off events. [2024-06-27 21:51:20,760 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 21:51:20,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 283 events. 109/283 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1650 event pairs, 25 based on Foata normal form. 4/262 useless extension candidates. Maximal degree in co-relation 488. Up to 147 conditions per place. [2024-06-27 21:51:20,764 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 23 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-06-27 21:51:20,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 156 flow [2024-06-27 21:51:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:51:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:51:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-06-27 21:51:20,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7681159420289855 [2024-06-27 21:51:20,776 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 89 flow. Second operand 3 states and 106 transitions. [2024-06-27 21:51:20,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 156 flow [2024-06-27 21:51:20,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:51:20,780 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 94 flow [2024-06-27 21:51:20,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-27 21:51:20,783 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2024-06-27 21:51:20,784 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 94 flow [2024-06-27 21:51:20,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-06-27 21:51:20,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:20,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:20,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:51:20,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:20,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:20,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1561223925, now seen corresponding path program 1 times [2024-06-27 21:51:20,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:20,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093219871] [2024-06-27 21:51:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:20,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:20,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093219871] [2024-06-27 21:51:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093219871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:20,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:20,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 21:51:20,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042381372] [2024-06-27 21:51:20,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:20,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:51:20,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:20,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:51:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:51:20,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 46 [2024-06-27 21:51:20,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-06-27 21:51:20,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:20,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 46 [2024-06-27 21:51:20,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:20,959 INFO L124 PetriNetUnfolderBase]: 151/393 cut-off events. [2024-06-27 21:51:20,959 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-06-27 21:51:20,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 393 events. 151/393 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2332 event pairs, 25 based on Foata normal form. 8/382 useless extension candidates. Maximal degree in co-relation 728. Up to 161 conditions per place. [2024-06-27 21:51:20,962 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 27 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-06-27 21:51:20,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 185 flow [2024-06-27 21:51:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:51:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:51:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-06-27 21:51:20,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7228260869565217 [2024-06-27 21:51:20,964 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 94 flow. Second operand 4 states and 133 transitions. [2024-06-27 21:51:20,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 185 flow [2024-06-27 21:51:20,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:51:20,966 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 108 flow [2024-06-27 21:51:20,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-06-27 21:51:20,967 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2024-06-27 21:51:20,967 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 108 flow [2024-06-27 21:51:20,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-06-27 21:51:20,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:20,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:20,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 21:51:20,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:20,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1860460029, now seen corresponding path program 1 times [2024-06-27 21:51:20,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:20,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143379039] [2024-06-27 21:51:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:20,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:21,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:21,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143379039] [2024-06-27 21:51:21,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143379039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:21,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:21,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:51:21,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100109381] [2024-06-27 21:51:21,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:21,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:51:21,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:21,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:51:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:51:21,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 46 [2024-06-27 21:51:21,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2024-06-27 21:51:21,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:21,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 46 [2024-06-27 21:51:21,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:21,157 INFO L124 PetriNetUnfolderBase]: 191/475 cut-off events. [2024-06-27 21:51:21,158 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-06-27 21:51:21,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 475 events. 191/475 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3048 event pairs, 45 based on Foata normal form. 8/470 useless extension candidates. Maximal degree in co-relation 952. Up to 174 conditions per place. [2024-06-27 21:51:21,161 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 30 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-06-27 21:51:21,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 204 flow [2024-06-27 21:51:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:51:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:51:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-06-27 21:51:21,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7228260869565217 [2024-06-27 21:51:21,166 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 108 flow. Second operand 4 states and 133 transitions. [2024-06-27 21:51:21,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 204 flow [2024-06-27 21:51:21,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:51:21,169 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 114 flow [2024-06-27 21:51:21,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-06-27 21:51:21,170 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2024-06-27 21:51:21,170 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 114 flow [2024-06-27 21:51:21,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2024-06-27 21:51:21,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:21,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 21:51:21,171 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:21,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1496992451, now seen corresponding path program 2 times [2024-06-27 21:51:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:21,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306280971] [2024-06-27 21:51:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:21,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:21,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:21,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306280971] [2024-06-27 21:51:21,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306280971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:21,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:21,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:51:21,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268466878] [2024-06-27 21:51:21,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:21,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:21,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:21,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 46 [2024-06-27 21:51:21,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2024-06-27 21:51:21,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:21,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 46 [2024-06-27 21:51:21,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:21,362 INFO L124 PetriNetUnfolderBase]: 179/455 cut-off events. [2024-06-27 21:51:21,362 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2024-06-27 21:51:21,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 455 events. 179/455 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2883 event pairs, 37 based on Foata normal form. 8/452 useless extension candidates. Maximal degree in co-relation 918. Up to 154 conditions per place. [2024-06-27 21:51:21,365 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 28 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-06-27 21:51:21,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 200 flow [2024-06-27 21:51:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:51:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:51:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-06-27 21:51:21,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2024-06-27 21:51:21,367 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 114 flow. Second operand 4 states and 132 transitions. [2024-06-27 21:51:21,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 200 flow [2024-06-27 21:51:21,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 189 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 21:51:21,370 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 103 flow [2024-06-27 21:51:21,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-27 21:51:21,371 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2024-06-27 21:51:21,371 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 103 flow [2024-06-27 21:51:21,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2024-06-27 21:51:21,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:21,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:21,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 21:51:21,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:21,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:21,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1264352212, now seen corresponding path program 1 times [2024-06-27 21:51:21,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:21,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679058204] [2024-06-27 21:51:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:21,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:21,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:21,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679058204] [2024-06-27 21:51:21,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679058204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:21,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:21,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:51:21,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583535834] [2024-06-27 21:51:21,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:21,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:51:21,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:21,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:51:21,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:51:21,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-06-27 21:51:21,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:21,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:21,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-06-27 21:51:21,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:21,622 INFO L124 PetriNetUnfolderBase]: 563/1123 cut-off events. [2024-06-27 21:51:21,622 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 21:51:21,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 1123 events. 563/1123 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7071 event pairs, 114 based on Foata normal form. 51/1134 useless extension candidates. Maximal degree in co-relation 2053. Up to 454 conditions per place. [2024-06-27 21:51:21,627 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 29 selfloop transitions, 5 changer transitions 1/56 dead transitions. [2024-06-27 21:51:21,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 211 flow [2024-06-27 21:51:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:51:21,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:51:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-06-27 21:51:21,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7663043478260869 [2024-06-27 21:51:21,629 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 103 flow. Second operand 4 states and 141 transitions. [2024-06-27 21:51:21,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 211 flow [2024-06-27 21:51:21,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 203 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:51:21,633 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 129 flow [2024-06-27 21:51:21,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2024-06-27 21:51:21,636 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2024-06-27 21:51:21,639 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 129 flow [2024-06-27 21:51:21,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:21,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:21,640 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] [2024-06-27 21:51:21,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 21:51:21,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:21,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:21,641 INFO L85 PathProgramCache]: Analyzing trace with hash 741850239, now seen corresponding path program 1 times [2024-06-27 21:51:21,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:21,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653063103] [2024-06-27 21:51:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:21,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:21,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:21,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653063103] [2024-06-27 21:51:21,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653063103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:21,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:21,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:21,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743864109] [2024-06-27 21:51:21,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:21,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:21,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:21,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:21,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:21,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-06-27 21:51:21,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 129 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:21,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:21,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-06-27 21:51:21,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:21,872 INFO L124 PetriNetUnfolderBase]: 481/970 cut-off events. [2024-06-27 21:51:21,872 INFO L125 PetriNetUnfolderBase]: For 326/370 co-relation queries the response was YES. [2024-06-27 21:51:21,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 970 events. 481/970 cut-off events. For 326/370 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5775 event pairs, 29 based on Foata normal form. 54/999 useless extension candidates. Maximal degree in co-relation 2230. Up to 364 conditions per place. [2024-06-27 21:51:21,876 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 36 selfloop transitions, 8 changer transitions 1/66 dead transitions. [2024-06-27 21:51:21,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 288 flow [2024-06-27 21:51:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-06-27 21:51:21,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7695652173913043 [2024-06-27 21:51:21,878 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 129 flow. Second operand 5 states and 177 transitions. [2024-06-27 21:51:21,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 288 flow [2024-06-27 21:51:21,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 278 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 21:51:21,879 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 169 flow [2024-06-27 21:51:21,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-27 21:51:21,880 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2024-06-27 21:51:21,880 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 169 flow [2024-06-27 21:51:21,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:21,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:21,881 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] [2024-06-27 21:51:21,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 21:51:21,881 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:21,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2111649070, now seen corresponding path program 1 times [2024-06-27 21:51:21,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:21,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174794787] [2024-06-27 21:51:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:21,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174794787] [2024-06-27 21:51:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174794787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:21,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:21,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:51:21,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14448315] [2024-06-27 21:51:21,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:21,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:21,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:21,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-06-27 21:51:21,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-06-27 21:51:21,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:21,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-06-27 21:51:21,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:22,076 INFO L124 PetriNetUnfolderBase]: 332/643 cut-off events. [2024-06-27 21:51:22,077 INFO L125 PetriNetUnfolderBase]: For 696/807 co-relation queries the response was YES. [2024-06-27 21:51:22,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 643 events. 332/643 cut-off events. For 696/807 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3018 event pairs, 12 based on Foata normal form. 48/670 useless extension candidates. Maximal degree in co-relation 1735. Up to 204 conditions per place. [2024-06-27 21:51:22,080 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 34 selfloop transitions, 11 changer transitions 1/67 dead transitions. [2024-06-27 21:51:22,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 315 flow [2024-06-27 21:51:22,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:51:22,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:51:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2024-06-27 21:51:22,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-06-27 21:51:22,081 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 169 flow. Second operand 6 states and 204 transitions. [2024-06-27 21:51:22,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 315 flow [2024-06-27 21:51:22,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 67 transitions, 290 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 21:51:22,087 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 183 flow [2024-06-27 21:51:22,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2024-06-27 21:51:22,088 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2024-06-27 21:51:22,088 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 183 flow [2024-06-27 21:51:22,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-06-27 21:51:22,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:22,088 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, 1, 1] [2024-06-27 21:51:22,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 21:51:22,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:22,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:22,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1132253073, now seen corresponding path program 1 times [2024-06-27 21:51:22,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:22,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548293016] [2024-06-27 21:51:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:22,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:22,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:22,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548293016] [2024-06-27 21:51:22,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548293016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:22,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:22,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:51:22,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311279814] [2024-06-27 21:51:22,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:22,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:51:22,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:22,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:51:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:51:22,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 46 [2024-06-27 21:51:22,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 45 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 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) [2024-06-27 21:51:22,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:22,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 46 [2024-06-27 21:51:22,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:22,588 INFO L124 PetriNetUnfolderBase]: 1277/2663 cut-off events. [2024-06-27 21:51:22,588 INFO L125 PetriNetUnfolderBase]: For 1590/1626 co-relation queries the response was YES. [2024-06-27 21:51:22,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6292 conditions, 2663 events. 1277/2663 cut-off events. For 1590/1626 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19305 event pairs, 358 based on Foata normal form. 56/2532 useless extension candidates. Maximal degree in co-relation 6274. Up to 519 conditions per place. [2024-06-27 21:51:22,599 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 23 selfloop transitions, 6 changer transitions 70/121 dead transitions. [2024-06-27 21:51:22,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 121 transitions, 575 flow [2024-06-27 21:51:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 21:51:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 21:51:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 444 transitions. [2024-06-27 21:51:22,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6434782608695652 [2024-06-27 21:51:22,602 INFO L175 Difference]: Start difference. First operand has 60 places, 45 transitions, 183 flow. Second operand 15 states and 444 transitions. [2024-06-27 21:51:22,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 121 transitions, 575 flow [2024-06-27 21:51:22,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 121 transitions, 487 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 21:51:22,613 INFO L231 Difference]: Finished difference. Result has 80 places, 46 transitions, 188 flow [2024-06-27 21:51:22,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=188, PETRI_PLACES=80, PETRI_TRANSITIONS=46} [2024-06-27 21:51:22,615 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 30 predicate places. [2024-06-27 21:51:22,615 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 46 transitions, 188 flow [2024-06-27 21:51:22,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 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) [2024-06-27 21:51:22,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:22,616 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, 1, 1] [2024-06-27 21:51:22,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 21:51:22,617 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:22,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:22,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2034125641, now seen corresponding path program 2 times [2024-06-27 21:51:22,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:22,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601737992] [2024-06-27 21:51:22,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:22,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:22,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:22,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601737992] [2024-06-27 21:51:22,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601737992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:22,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:22,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:51:22,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002191696] [2024-06-27 21:51:22,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:22,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:22,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:22,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:22,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:22,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 46 [2024-06-27 21:51:22,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 46 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 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) [2024-06-27 21:51:22,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:22,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 46 [2024-06-27 21:51:22,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:22,864 INFO L124 PetriNetUnfolderBase]: 147/381 cut-off events. [2024-06-27 21:51:22,865 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2024-06-27 21:51:22,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 381 events. 147/381 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1849 event pairs, 28 based on Foata normal form. 8/345 useless extension candidates. Maximal degree in co-relation 860. Up to 144 conditions per place. [2024-06-27 21:51:22,866 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2024-06-27 21:51:22,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 53 transitions, 246 flow [2024-06-27 21:51:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:51:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:51:22,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-27 21:51:22,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2024-06-27 21:51:22,868 INFO L175 Difference]: Start difference. First operand has 80 places, 46 transitions, 188 flow. Second operand 6 states and 183 transitions. [2024-06-27 21:51:22,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 53 transitions, 246 flow [2024-06-27 21:51:22,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 218 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 21:51:22,869 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-06-27 21:51:22,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-06-27 21:51:22,870 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-06-27 21:51:22,870 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-06-27 21:51:22,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 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) [2024-06-27 21:51:22,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-06-27 21:51:22,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-06-27 21:51:22,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 21:51:22,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-06-27 21:51:22,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 21:51:22,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 21:51:22,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2024-06-27 21:51:22,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 21:51:22,876 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-06-27 21:51:22,879 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 21:51:22,879 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 21:51:22,883 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-27 21:51:22,883 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-27 21:51:22,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 09:51:22 BasicIcfg [2024-06-27 21:51:22,884 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 21:51:22,884 INFO L158 Benchmark]: Toolchain (without parser) took 3617.59ms. Allocated memory was 155.2MB in the beginning and 283.1MB in the end (delta: 127.9MB). Free memory was 92.6MB in the beginning and 211.0MB in the end (delta: -118.3MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2024-06-27 21:51:22,885 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 155.2MB. Free memory was 114.9MB in the beginning and 114.7MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:51:22,885 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 112.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:51:22,885 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.00ms. Allocated memory is still 155.2MB. Free memory was 92.6MB in the beginning and 67.0MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-27 21:51:22,885 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.07ms. Allocated memory is still 155.2MB. Free memory was 67.0MB in the beginning and 64.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:51:22,886 INFO L158 Benchmark]: Boogie Preprocessor took 58.45ms. Allocated memory is still 155.2MB. Free memory was 64.9MB in the beginning and 122.7MB in the end (delta: -57.8MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2024-06-27 21:51:22,886 INFO L158 Benchmark]: RCFGBuilder took 465.32ms. Allocated memory was 155.2MB in the beginning and 216.0MB in the end (delta: 60.8MB). Free memory was 122.6MB in the beginning and 167.5MB in the end (delta: -44.9MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2024-06-27 21:51:22,887 INFO L158 Benchmark]: TraceAbstraction took 2617.90ms. Allocated memory was 216.0MB in the beginning and 283.1MB in the end (delta: 67.1MB). Free memory was 167.5MB in the beginning and 211.0MB in the end (delta: -43.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2024-06-27 21:51:22,888 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 155.2MB. Free memory was 114.9MB in the beginning and 114.7MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 112.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 443.00ms. Allocated memory is still 155.2MB. Free memory was 92.6MB in the beginning and 67.0MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.07ms. Allocated memory is still 155.2MB. Free memory was 67.0MB in the beginning and 64.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.45ms. Allocated memory is still 155.2MB. Free memory was 64.9MB in the beginning and 122.7MB in the end (delta: -57.8MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * RCFGBuilder took 465.32ms. Allocated memory was 155.2MB in the beginning and 216.0MB in the end (delta: 60.8MB). Free memory was 122.6MB in the beginning and 167.5MB in the end (delta: -44.9MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2617.90ms. Allocated memory was 216.0MB in the beginning and 283.1MB in the end (delta: 67.1MB). Free memory was 167.5MB in the beginning and 211.0MB in the end (delta: -43.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 783]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 785]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 786]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: 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 7 procedures, 71 locations, 7 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: 2.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 421 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 359 mSDsluCounter, 177 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 796 IncrementalHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 29 mSDtfsCounter, 796 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=8, InterpolantAutomatonStates: 51, 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, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 678 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 21:51:22,920 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