./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/popl20-more-buffer-mult2.wvr.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/weaver/popl20-more-buffer-mult2.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/popl20-more-buffer-mult2.wvr.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:46:41,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:46:42,023 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:46:42,027 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:46:42,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:46:42,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:46:42,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:46:42,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:46:42,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:46:42,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:46:42,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:46:42,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:46:42,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:46:42,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:46:42,058 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:46:42,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:46:42,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:46:42,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:46:42,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:46:42,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:46:42,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:46:42,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:46:42,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:46:42,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:46:42,060 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:46:42,060 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:46:42,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:46:42,061 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:46:42,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:46:42,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:46:42,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:46:42,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:46:42,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:46:42,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:46:42,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:46:42,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:46:42,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:46:42,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:46:42,064 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:46:42,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:46:42,064 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:46:42,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:46:42,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:46:42,065 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:46:42,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:46:42,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:46:42,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:46:42,271 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:46:42,271 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:46:42,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/popl20-more-buffer-mult2.wvr.yml/witness.yml [2024-06-28 02:46:42,382 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:46:42,382 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:46:42,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2024-06-28 02:46:43,436 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:46:43,602 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:46:43,603 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2024-06-28 02:46:43,613 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7b97bd0/7ad7f336a9d64ea58fe37e3ba2b0f1b5/FLAGb2562b8ba [2024-06-28 02:46:43,624 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7b97bd0/7ad7f336a9d64ea58fe37e3ba2b0f1b5 [2024-06-28 02:46:43,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:46:43,625 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:46:43,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:46:43,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:46:43,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:46:43,630 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:46:42" (1/2) ... [2024-06-28 02:46:43,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1f84a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:46:43, skipping insertion in model container [2024-06-28 02:46:43,631 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:46:42" (1/2) ... [2024-06-28 02:46:43,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d0abd7d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:46:43, skipping insertion in model container [2024-06-28 02:46:43,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:46:43" (2/2) ... [2024-06-28 02:46:43,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1f84a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43, skipping insertion in model container [2024-06-28 02:46:43,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:46:43" (2/2) ... [2024-06-28 02:46:43,637 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:46:43,661 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:46:43,665 INFO L97 edCorrectnessWitness]: Location invariant before [L141-L141] ((! multithreaded || 0 <= j) && (! multithreaded || (0 <= i && 0 <= j))) && (! multithreaded || 0 <= i) [2024-06-28 02:46:43,665 INFO L97 edCorrectnessWitness]: Location invariant before [L140-L140] ((! multithreaded || 0 <= j) && (! multithreaded || (0 <= i && 0 <= j))) && (! multithreaded || 0 <= i) [2024-06-28 02:46:43,665 INFO L97 edCorrectnessWitness]: Location invariant before [L142-L142] ((! multithreaded || 0 <= j) && (! multithreaded || (0 <= i && 0 <= j))) && (! multithreaded || 0 <= i) [2024-06-28 02:46:43,665 INFO L97 edCorrectnessWitness]: Location invariant before [L139-L139] ((! multithreaded || 0 <= j) && (! multithreaded || (0 <= i && 0 <= j))) && (! multithreaded || 0 <= i) [2024-06-28 02:46:43,666 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:46:43,666 INFO L106 edCorrectnessWitness]: ghost_update [L138-L138] multithreaded = 1; [2024-06-28 02:46:43,684 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:46:43,833 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:46:43,839 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:46:43,896 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:46:43,914 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:46:43,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43 WrapperNode [2024-06-28 02:46:43,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:46:43,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:46:43,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:46:43,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:46:43,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:43,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:43,949 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 301 [2024-06-28 02:46:43,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:46:43,950 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:46:43,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:46:43,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:46:43,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:43,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:43,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:43,975 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-06-28 02:46:43,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:43,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:43,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:43,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:43,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:44,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:44,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:46:44,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:46:44,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:46:44,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:46:44,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (1/1) ... [2024-06-28 02:46:44,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:46:44,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:46:44,034 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) [2024-06-28 02:46:44,041 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 [2024-06-28 02:46:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:46:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 02:46:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 02:46:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 02:46:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 02:46:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-28 02:46:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-28 02:46:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-28 02:46:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-28 02:46:44,073 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-28 02:46:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-28 02:46:44,073 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-28 02:46:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-28 02:46:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:46:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 02:46:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:46:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:46:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-28 02:46:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:46:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:46:44,076 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:46:44,191 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:46:44,193 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:46:44,523 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:46:44,524 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:46:44,791 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:46:44,824 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-28 02:46:44,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:46:44 BoogieIcfgContainer [2024-06-28 02:46:44,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:46:44,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:46:44,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:46:44,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:46:44,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:46:42" (1/4) ... [2024-06-28 02:46:44,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275be626 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:46:44, skipping insertion in model container [2024-06-28 02:46:44,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:46:43" (2/4) ... [2024-06-28 02:46:44,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275be626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:46:44, skipping insertion in model container [2024-06-28 02:46:44,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:46:43" (3/4) ... [2024-06-28 02:46:44,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275be626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:46:44, skipping insertion in model container [2024-06-28 02:46:44,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:46:44" (4/4) ... [2024-06-28 02:46:44,831 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2024-06-28 02:46:44,844 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:46:44,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 02:46:44,845 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:46:44,896 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-28 02:46:44,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 55 transitions, 138 flow [2024-06-28 02:46:44,952 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-06-28 02:46:44,952 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-28 02:46:44,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 6/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 02:46:44,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 55 transitions, 138 flow [2024-06-28 02:46:44,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 49 transitions, 119 flow [2024-06-28 02:46:44,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:46:44,978 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;@1e9d951d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:46:44,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 02:46:44,992 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:46:44,992 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-06-28 02:46:44,992 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:46:44,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:46:44,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:46:44,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:46:44,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:46:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash -124526226, now seen corresponding path program 1 times [2024-06-28 02:46:45,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:46:45,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147058741] [2024-06-28 02:46:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:46:45,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:46:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:46:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:46:45,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:46:45,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147058741] [2024-06-28 02:46:45,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147058741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:46:45,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:46:45,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:46:45,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432924826] [2024-06-28 02:46:45,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:46:45,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:46:45,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:46:45,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:46:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:46:45,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-28 02:46:45,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-06-28 02:46:45,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:46:45,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-28 02:46:45,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:46:45,772 INFO L124 PetriNetUnfolderBase]: 1639/2607 cut-off events. [2024-06-28 02:46:45,773 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-06-28 02:46:45,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4961 conditions, 2607 events. 1639/2607 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15218 event pairs, 308 based on Foata normal form. 36/2490 useless extension candidates. Maximal degree in co-relation 4431. Up to 1758 conditions per place. [2024-06-28 02:46:45,791 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 47 selfloop transitions, 3 changer transitions 2/70 dead transitions. [2024-06-28 02:46:45,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 283 flow [2024-06-28 02:46:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:46:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:46:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-06-28 02:46:45,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2024-06-28 02:46:45,804 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 119 flow. Second operand 3 states and 122 transitions. [2024-06-28 02:46:45,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 283 flow [2024-06-28 02:46:45,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 259 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:46:45,814 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 131 flow [2024-06-28 02:46:45,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-06-28 02:46:45,818 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2024-06-28 02:46:45,819 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 131 flow [2024-06-28 02:46:45,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-06-28 02:46:45,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:46:45,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:46:45,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:46:45,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:46:45,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:46:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash -493343477, now seen corresponding path program 1 times [2024-06-28 02:46:45,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:46:45,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659152014] [2024-06-28 02:46:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:46:45,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:46:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:46:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:46:45,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:46:45,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659152014] [2024-06-28 02:46:45,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659152014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:46:45,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:46:45,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:46:45,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414386718] [2024-06-28 02:46:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:46:45,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:46:45,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:46:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:46:45,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:46:45,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-06-28 02:46:45,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-06-28 02:46:45,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:46:45,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-06-28 02:46:45,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:46:46,275 INFO L124 PetriNetUnfolderBase]: 1715/2926 cut-off events. [2024-06-28 02:46:46,276 INFO L125 PetriNetUnfolderBase]: For 774/786 co-relation queries the response was YES. [2024-06-28 02:46:46,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 2926 events. 1715/2926 cut-off events. For 774/786 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 19963 event pairs, 1206 based on Foata normal form. 176/2905 useless extension candidates. Maximal degree in co-relation 1971. Up to 1661 conditions per place. [2024-06-28 02:46:46,294 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 50 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-06-28 02:46:46,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 302 flow [2024-06-28 02:46:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:46:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:46:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-06-28 02:46:46,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6654545454545454 [2024-06-28 02:46:46,301 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 131 flow. Second operand 5 states and 183 transitions. [2024-06-28 02:46:46,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 302 flow [2024-06-28 02:46:46,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:46:46,306 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 160 flow [2024-06-28 02:46:46,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-28 02:46:46,307 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-28 02:46:46,311 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 160 flow [2024-06-28 02:46:46,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-06-28 02:46:46,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:46:46,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:46:46,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:46:46,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:46:46,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:46:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1055011857, now seen corresponding path program 1 times [2024-06-28 02:46:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:46:46,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524090615] [2024-06-28 02:46:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:46:46,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:46:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:46:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-28 02:46:46,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:46:46,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524090615] [2024-06-28 02:46:46,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524090615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:46:46,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:46:46,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:46:46,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501528054] [2024-06-28 02:46:46,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:46:46,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:46:46,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:46:46,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:46:46,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:46:46,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-28 02:46:46,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-06-28 02:46:46,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:46:46,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-28 02:46:46,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:46:46,767 INFO L124 PetriNetUnfolderBase]: 2168/3610 cut-off events. [2024-06-28 02:46:46,768 INFO L125 PetriNetUnfolderBase]: For 1329/1443 co-relation queries the response was YES. [2024-06-28 02:46:46,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8053 conditions, 3610 events. 2168/3610 cut-off events. For 1329/1443 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 23912 event pairs, 473 based on Foata normal form. 54/3523 useless extension candidates. Maximal degree in co-relation 6157. Up to 1775 conditions per place. [2024-06-28 02:46:46,788 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 65 selfloop transitions, 4 changer transitions 3/90 dead transitions. [2024-06-28 02:46:46,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 397 flow [2024-06-28 02:46:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:46:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:46:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-06-28 02:46:46,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-06-28 02:46:46,790 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 160 flow. Second operand 4 states and 161 transitions. [2024-06-28 02:46:46,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 397 flow [2024-06-28 02:46:46,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 393 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 02:46:46,794 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 174 flow [2024-06-28 02:46:46,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-06-28 02:46:46,795 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2024-06-28 02:46:46,796 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 174 flow [2024-06-28 02:46:46,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-06-28 02:46:46,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:46:46,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:46:46,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:46:46,797 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:46:46,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:46:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1193069352, now seen corresponding path program 1 times [2024-06-28 02:46:46,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:46:46,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196059904] [2024-06-28 02:46:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:46:46,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:46:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:46:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:46:46,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:46:46,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196059904] [2024-06-28 02:46:46,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196059904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:46:46,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:46:46,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:46:46,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596166031] [2024-06-28 02:46:46,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:46:46,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:46:46,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:46:46,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:46:46,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:46:46,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-06-28 02:46:46,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2024-06-28 02:46:46,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:46:46,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-06-28 02:46:46,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:46:47,289 INFO L124 PetriNetUnfolderBase]: 2567/4437 cut-off events. [2024-06-28 02:46:47,289 INFO L125 PetriNetUnfolderBase]: For 3922/3952 co-relation queries the response was YES. [2024-06-28 02:46:47,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10467 conditions, 4437 events. 2567/4437 cut-off events. For 3922/3952 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32692 event pairs, 1895 based on Foata normal form. 187/4330 useless extension candidates. Maximal degree in co-relation 8110. Up to 2646 conditions per place. [2024-06-28 02:46:47,312 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 31 selfloop transitions, 3 changer transitions 23/78 dead transitions. [2024-06-28 02:46:47,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 363 flow [2024-06-28 02:46:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:46:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:46:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-06-28 02:46:47,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-06-28 02:46:47,313 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 174 flow. Second operand 4 states and 155 transitions. [2024-06-28 02:46:47,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 363 flow [2024-06-28 02:46:47,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 78 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:46:47,316 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 191 flow [2024-06-28 02:46:47,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-28 02:46:47,317 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-28 02:46:47,317 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 191 flow [2024-06-28 02:46:47,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2024-06-28 02:46:47,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:46:47,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:46:47,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:46:47,318 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:46:47,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:46:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash 952147664, now seen corresponding path program 1 times [2024-06-28 02:46:47,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:46:47,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667615122] [2024-06-28 02:46:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:46:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:46:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:46:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-28 02:46:47,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:46:47,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667615122] [2024-06-28 02:46:47,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667615122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:46:47,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:46:47,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:46:47,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958990978] [2024-06-28 02:46:47,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:46:47,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:46:47,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:46:47,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:46:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:46:47,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-28 02:46:47,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:46:47,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:46:47,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-28 02:46:47,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:46:47,762 INFO L124 PetriNetUnfolderBase]: 2134/3664 cut-off events. [2024-06-28 02:46:47,763 INFO L125 PetriNetUnfolderBase]: For 2732/2836 co-relation queries the response was YES. [2024-06-28 02:46:47,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8817 conditions, 3664 events. 2134/3664 cut-off events. For 2732/2836 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 25111 event pairs, 546 based on Foata normal form. 88/3643 useless extension candidates. Maximal degree in co-relation 7062. Up to 1408 conditions per place. [2024-06-28 02:46:47,788 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 62 selfloop transitions, 4 changer transitions 8/92 dead transitions. [2024-06-28 02:46:47,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 442 flow [2024-06-28 02:46:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:46:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:46:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-06-28 02:46:47,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-06-28 02:46:47,791 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 191 flow. Second operand 4 states and 160 transitions. [2024-06-28 02:46:47,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 442 flow [2024-06-28 02:46:47,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 92 transitions, 437 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 02:46:47,796 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 194 flow [2024-06-28 02:46:47,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-06-28 02:46:47,798 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-28 02:46:47,798 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 194 flow [2024-06-28 02:46:47,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:46:47,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:46:47,799 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] [2024-06-28 02:46:47,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:46:47,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:46:47,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:46:47,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1033388967, now seen corresponding path program 1 times [2024-06-28 02:46:47,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:46:47,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782822413] [2024-06-28 02:46:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:46:47,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:46:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:46:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 02:46:47,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:46:47,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782822413] [2024-06-28 02:46:47,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782822413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:46:47,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:46:47,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:46:47,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924815560] [2024-06-28 02:46:47,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:46:47,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:46:47,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:46:47,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:46:47,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:46:47,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-28 02:46:47,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-28 02:46:47,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:46:47,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-28 02:46:47,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:46:48,322 INFO L124 PetriNetUnfolderBase]: 2091/3526 cut-off events. [2024-06-28 02:46:48,322 INFO L125 PetriNetUnfolderBase]: For 4264/4368 co-relation queries the response was YES. [2024-06-28 02:46:48,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9163 conditions, 3526 events. 2091/3526 cut-off events. For 4264/4368 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 23581 event pairs, 376 based on Foata normal form. 52/3501 useless extension candidates. Maximal degree in co-relation 9138. Up to 1342 conditions per place. [2024-06-28 02:46:48,343 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 81 selfloop transitions, 4 changer transitions 5/108 dead transitions. [2024-06-28 02:46:48,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 108 transitions, 529 flow [2024-06-28 02:46:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:46:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:46:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-06-28 02:46:48,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-06-28 02:46:48,345 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 194 flow. Second operand 5 states and 200 transitions. [2024-06-28 02:46:48,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 108 transitions, 529 flow [2024-06-28 02:46:48,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 108 transitions, 521 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 02:46:48,350 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 201 flow [2024-06-28 02:46:48,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-06-28 02:46:48,352 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-28 02:46:48,353 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 201 flow [2024-06-28 02:46:48,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-28 02:46:48,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:46:48,353 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] [2024-06-28 02:46:48,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:46:48,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:46:48,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:46:48,354 INFO L85 PathProgramCache]: Analyzing trace with hash -748052877, now seen corresponding path program 2 times [2024-06-28 02:46:48,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:46:48,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033797792] [2024-06-28 02:46:48,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:46:48,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:46:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:46:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 02:46:48,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:46:48,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033797792] [2024-06-28 02:46:48,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033797792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:46:48,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:46:48,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:46:48,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105350934] [2024-06-28 02:46:48,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:46:48,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:46:48,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:46:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:46:48,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:46:48,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-28 02:46:48,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-28 02:46:48,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:46:48,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-28 02:46:48,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:46:48,867 INFO L124 PetriNetUnfolderBase]: 1931/3294 cut-off events. [2024-06-28 02:46:48,868 INFO L125 PetriNetUnfolderBase]: For 4467/4467 co-relation queries the response was YES. [2024-06-28 02:46:48,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8482 conditions, 3294 events. 1931/3294 cut-off events. For 4467/4467 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 22077 event pairs, 333 based on Foata normal form. 52/3293 useless extension candidates. Maximal degree in co-relation 8457. Up to 1136 conditions per place. [2024-06-28 02:46:48,876 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 0 selfloop transitions, 0 changer transitions 105/105 dead transitions. [2024-06-28 02:46:48,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 498 flow [2024-06-28 02:46:48,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:46:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:46:48,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-06-28 02:46:48,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7163636363636363 [2024-06-28 02:46:48,878 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 201 flow. Second operand 5 states and 197 transitions. [2024-06-28 02:46:48,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 498 flow [2024-06-28 02:46:48,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 105 transitions, 490 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:46:48,883 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-06-28 02:46:48,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-06-28 02:46:48,884 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-28 02:46:48,884 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-06-28 02:46:48,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-28 02:46:48,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-28 02:46:48,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-28 02:46:48,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-28 02:46:48,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-28 02:46:48,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-28 02:46:48,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-28 02:46:48,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-28 02:46:48,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-28 02:46:48,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:46:48,888 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-06-28 02:46:48,890 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:46:48,890 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:46:48,893 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-28 02:46:48,894 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-28 02:46:48,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:46:48 BasicIcfg [2024-06-28 02:46:48,894 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:46:48,895 INFO L158 Benchmark]: Toolchain (without parser) took 5269.94ms. Allocated memory was 188.7MB in the beginning and 371.2MB in the end (delta: 182.5MB). Free memory was 152.4MB in the beginning and 283.4MB in the end (delta: -131.0MB). Peak memory consumption was 252.1MB. Max. memory is 16.1GB. [2024-06-28 02:46:48,895 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 132.1MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:46:48,895 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 132.1MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:46:48,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.90ms. Allocated memory is still 188.7MB. Free memory was 152.4MB in the beginning and 135.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-28 02:46:48,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.21ms. Allocated memory is still 188.7MB. Free memory was 135.6MB in the beginning and 132.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:46:48,896 INFO L158 Benchmark]: Boogie Preprocessor took 57.95ms. Allocated memory is still 188.7MB. Free memory was 132.5MB in the beginning and 129.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 02:46:48,896 INFO L158 Benchmark]: RCFGBuilder took 815.64ms. Allocated memory is still 188.7MB. Free memory was 129.3MB in the beginning and 145.0MB in the end (delta: -15.7MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. [2024-06-28 02:46:48,897 INFO L158 Benchmark]: TraceAbstraction took 4068.17ms. Allocated memory was 188.7MB in the beginning and 371.2MB in the end (delta: 182.5MB). Free memory was 143.9MB in the beginning and 283.4MB in the end (delta: -139.4MB). Peak memory consumption was 244.8MB. Max. memory is 16.1GB. [2024-06-28 02:46:48,898 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 0.17ms. Allocated memory is still 132.1MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.08ms. Allocated memory is still 132.1MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.90ms. Allocated memory is still 188.7MB. Free memory was 152.4MB in the beginning and 135.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.21ms. Allocated memory is still 188.7MB. Free memory was 135.6MB in the beginning and 132.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.95ms. Allocated memory is still 188.7MB. Free memory was 132.5MB in the beginning and 129.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 815.64ms. Allocated memory is still 188.7MB. Free memory was 129.3MB in the beginning and 145.0MB in the end (delta: -15.7MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4068.17ms. Allocated memory was 188.7MB in the beginning and 371.2MB in the end (delta: 182.5MB). Free memory was 143.9MB in the beginning and 283.4MB in the end (delta: -139.4MB). Peak memory consumption was 244.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 139]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 140]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 141]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 142]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 78 locations, 8 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: 4.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 436 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 332 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1099 IncrementalHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 6 mSDtfsCounter, 1099 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=6, InterpolantAutomatonStates: 30, 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, 0.6s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 6/6 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! [2024-06-28 02:46:48,920 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