./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.2024-05-21_14-57-05.files/protection/popl20-more-buffer-mult2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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.2024-05-21_14-57-05.files/protection/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-cde23df-m [2024-06-14 11:43:54,690 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:43:54,738 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:43:54,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:43:54,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:43:54,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:43:54,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:43:54,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:43:54,755 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:43:54,755 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:43:54,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:43:54,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:43:54,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:43:54,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:43:54,757 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:43:54,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:43:54,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:43:54,758 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:43:54,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:43:54,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:43:54,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:43:54,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:43:54,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:43:54,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:43:54,759 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:43:54,760 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:43:54,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:43:54,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:43:54,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:43:54,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:43:54,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:43:54,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:43:54,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:43:54,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:43:54,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:43:54,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:43:54,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:43:54,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:43:54,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:43:54,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:43:54,764 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:43:54,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:43:54,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:43:54,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:43:54,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:43:54,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:43:55,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:43:55,003 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:43:55,004 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:43:55,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2024-06-14 11:43:56,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:43:56,283 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:43:56,284 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2024-06-14 11:43:56,293 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b87232a4b/48f317b366fc4bde80edd5aa6e96854c/FLAGd35d0d766 [2024-06-14 11:43:56,303 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b87232a4b/48f317b366fc4bde80edd5aa6e96854c [2024-06-14 11:43:56,308 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:43:56,309 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:43:56,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/popl20-more-buffer-mult2.wvr.yml/witness.yml [2024-06-14 11:43:56,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:43:56,390 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:43:56,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:43:56,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:43:56,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:43:56,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:43:56" (1/2) ... [2024-06-14 11:43:56,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a752fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:43:56, skipping insertion in model container [2024-06-14 11:43:56,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:43:56" (1/2) ... [2024-06-14 11:43:56,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23e3300d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:43:56, skipping insertion in model container [2024-06-14 11:43:56,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:43:56" (2/2) ... [2024-06-14 11:43:56,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a752fdc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56, skipping insertion in model container [2024-06-14 11:43:56,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:43:56" (2/2) ... [2024-06-14 11:43:56,399 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:43:56,420 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:43:56,421 INFO L97 edCorrectnessWitness]: Location invariant before [L142-L142] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-14 11:43:56,422 INFO L97 edCorrectnessWitness]: Location invariant before [L141-L141] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-14 11:43:56,422 INFO L97 edCorrectnessWitness]: Location invariant before [L139-L139] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-14 11:43:56,422 INFO L97 edCorrectnessWitness]: Location invariant before [L140-L140] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-14 11:43:56,422 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:43:56,422 INFO L106 edCorrectnessWitness]: ghost_update [L138-L138] multithreaded = 1; [2024-06-14 11:43:56,442 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:43:56,615 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:43:56,625 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:43:56,687 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:43:56,700 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:43:56,711 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56 WrapperNode [2024-06-14 11:43:56,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:43:56,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:43:56,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:43:56,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:43:56,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,751 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 301 [2024-06-14 11:43:56,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:43:56,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:43:56,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:43:56,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:43:56,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,763 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,783 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]. [2024-06-14 11:43:56,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:43:56,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:43:56,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:43:56,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:43:56,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (1/1) ... [2024-06-14 11:43:56,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:43:56,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:43:56,843 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) [2024-06-14 11:43:56,848 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 [2024-06-14 11:43:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:43:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-14 11:43:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-14 11:43:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-14 11:43:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-14 11:43:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-14 11:43:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-14 11:43:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-14 11:43:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-14 11:43:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-14 11:43:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-14 11:43:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-14 11:43:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-14 11:43:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:43:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 11:43:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:43:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:43:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-14 11:43:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:43:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:43:56,873 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:43:56,955 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:43:56,957 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:43:57,271 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:43:57,272 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:43:57,530 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:43:57,531 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-14 11:43:57,531 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:43:57 BoogieIcfgContainer [2024-06-14 11:43:57,531 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:43:57,534 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:43:57,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:43:57,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:43:57,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:43:56" (1/4) ... [2024-06-14 11:43:57,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c7b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:43:57, skipping insertion in model container [2024-06-14 11:43:57,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:43:56" (2/4) ... [2024-06-14 11:43:57,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c7b53 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:43:57, skipping insertion in model container [2024-06-14 11:43:57,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:43:56" (3/4) ... [2024-06-14 11:43:57,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c7b53 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:43:57, skipping insertion in model container [2024-06-14 11:43:57,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:43:57" (4/4) ... [2024-06-14 11:43:57,540 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2024-06-14 11:43:57,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:43:57,555 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-14 11:43:57,555 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:43:57,602 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-14 11:43:57,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 56 transitions, 140 flow [2024-06-14 11:43:57,667 INFO L124 PetriNetUnfolderBase]: 6/52 cut-off events. [2024-06-14 11:43:57,667 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 11:43:57,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 52 events. 6/52 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. 0/42 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-14 11:43:57,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 56 transitions, 140 flow [2024-06-14 11:43:57,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 50 transitions, 121 flow [2024-06-14 11:43:57,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:43:57,696 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;@19d50da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:43:57,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-14 11:43:57,703 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:43:57,703 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2024-06-14 11:43:57,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:43:57,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:43:57,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:43:57,704 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)] === [2024-06-14 11:43:57,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:43:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1214658719, now seen corresponding path program 1 times [2024-06-14 11:43:57,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:43:57,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343663239] [2024-06-14 11:43:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:43:57,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:43:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:43:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:43:58,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:43:58,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343663239] [2024-06-14 11:43:58,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343663239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:43:58,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:43:58,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:43:58,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759393532] [2024-06-14 11:43:58,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:43:58,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:43:58,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:43:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:43:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:43:58,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-14 11:43:58,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-06-14 11:43:58,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:43:58,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-14 11:43:58,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:43:58,569 INFO L124 PetriNetUnfolderBase]: 1639/2608 cut-off events. [2024-06-14 11:43:58,569 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-14 11:43:58,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4964 conditions, 2608 events. 1639/2608 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15270 event pairs, 308 based on Foata normal form. 36/2485 useless extension candidates. Maximal degree in co-relation 4431. Up to 1758 conditions per place. [2024-06-14 11:43:58,602 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 49 selfloop transitions, 3 changer transitions 2/71 dead transitions. [2024-06-14 11:43:58,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 289 flow [2024-06-14 11:43:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:43:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:43:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-06-14 11:43:58,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7202380952380952 [2024-06-14 11:43:58,631 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 121 flow. Second operand 3 states and 121 transitions. [2024-06-14 11:43:58,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 289 flow [2024-06-14 11:43:58,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 265 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 11:43:58,706 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 133 flow [2024-06-14 11:43:58,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-06-14 11:43:58,710 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2024-06-14 11:43:58,711 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 133 flow [2024-06-14 11:43:58,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-06-14 11:43:58,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:43:58,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:43:58,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:43:58,712 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)] === [2024-06-14 11:43:58,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:43:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash -167942174, now seen corresponding path program 1 times [2024-06-14 11:43:58,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:43:58,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694235017] [2024-06-14 11:43:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:43:58,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:43:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:43:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:43:58,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:43:58,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694235017] [2024-06-14 11:43:58,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694235017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:43:58,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:43:58,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:43:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103529468] [2024-06-14 11:43:58,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:43:58,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:43:58,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:43:58,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:43:58,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:43:58,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-14 11:43:58,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-06-14 11:43:58,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:43:58,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-14 11:43:58,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:43:59,223 INFO L124 PetriNetUnfolderBase]: 1659/2681 cut-off events. [2024-06-14 11:43:59,223 INFO L125 PetriNetUnfolderBase]: For 534/612 co-relation queries the response was YES. [2024-06-14 11:43:59,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5821 conditions, 2681 events. 1659/2681 cut-off events. For 534/612 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 16395 event pairs, 294 based on Foata normal form. 54/2637 useless extension candidates. Maximal degree in co-relation 1085. Up to 1295 conditions per place. [2024-06-14 11:43:59,241 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 64 selfloop transitions, 4 changer transitions 3/88 dead transitions. [2024-06-14 11:43:59,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 88 transitions, 362 flow [2024-06-14 11:43:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:43:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:43:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-06-14 11:43:59,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7098214285714286 [2024-06-14 11:43:59,249 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 133 flow. Second operand 4 states and 159 transitions. [2024-06-14 11:43:59,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 88 transitions, 362 flow [2024-06-14 11:43:59,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:43:59,255 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 148 flow [2024-06-14 11:43:59,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-06-14 11:43:59,256 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -2 predicate places. [2024-06-14 11:43:59,259 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 148 flow [2024-06-14 11:43:59,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-06-14 11:43:59,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:43:59,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:43:59,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:43:59,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:43:59,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:43:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1082803225, now seen corresponding path program 1 times [2024-06-14 11:43:59,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:43:59,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682200566] [2024-06-14 11:43:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:43:59,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:43:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:43:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:43:59,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:43:59,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682200566] [2024-06-14 11:43:59,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682200566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:43:59,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:43:59,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:43:59,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860894293] [2024-06-14 11:43:59,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:43:59,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:43:59,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:43:59,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:43:59,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:43:59,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-14 11:43:59,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 148 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) [2024-06-14 11:43:59,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:43:59,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-14 11:43:59,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:43:59,760 INFO L124 PetriNetUnfolderBase]: 1711/2855 cut-off events. [2024-06-14 11:43:59,761 INFO L125 PetriNetUnfolderBase]: For 1553/1657 co-relation queries the response was YES. [2024-06-14 11:43:59,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6455 conditions, 2855 events. 1711/2855 cut-off events. For 1553/1657 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18365 event pairs, 385 based on Foata normal form. 52/2821 useless extension candidates. Maximal degree in co-relation 2402. Up to 1408 conditions per place. [2024-06-14 11:43:59,774 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 62 selfloop transitions, 4 changer transitions 6/89 dead transitions. [2024-06-14 11:43:59,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 89 transitions, 385 flow [2024-06-14 11:43:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:43:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:43:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-06-14 11:43:59,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2024-06-14 11:43:59,775 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 148 flow. Second operand 4 states and 158 transitions. [2024-06-14 11:43:59,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 89 transitions, 385 flow [2024-06-14 11:43:59,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 89 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:43:59,778 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 164 flow [2024-06-14 11:43:59,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-06-14 11:43:59,779 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2024-06-14 11:43:59,779 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 164 flow [2024-06-14 11:43:59,779 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) [2024-06-14 11:43:59,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:43:59,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:43:59,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:43:59,780 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)] === [2024-06-14 11:43:59,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:43:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1099255756, now seen corresponding path program 1 times [2024-06-14 11:43:59,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:43:59,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369056782] [2024-06-14 11:43:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:43:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:43:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:43:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:43:59,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:43:59,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369056782] [2024-06-14 11:43:59,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369056782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:43:59,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:43:59,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:43:59,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229041308] [2024-06-14 11:43:59,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:43:59,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:43:59,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:43:59,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:43:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:43:59,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2024-06-14 11:43:59,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 164 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) [2024-06-14 11:43:59,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:43:59,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2024-06-14 11:43:59,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:00,146 INFO L124 PetriNetUnfolderBase]: 2082/3466 cut-off events. [2024-06-14 11:44:00,146 INFO L125 PetriNetUnfolderBase]: For 3094/3106 co-relation queries the response was YES. [2024-06-14 11:44:00,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8093 conditions, 3466 events. 2082/3466 cut-off events. For 3094/3106 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 23611 event pairs, 1578 based on Foata normal form. 158/3378 useless extension candidates. Maximal degree in co-relation 4393. Up to 2205 conditions per place. [2024-06-14 11:44:00,163 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 32 selfloop transitions, 2 changer transitions 26/80 dead transitions. [2024-06-14 11:44:00,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 355 flow [2024-06-14 11:44:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:44:00,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:44:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-06-14 11:44:00,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-14 11:44:00,165 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 164 flow. Second operand 5 states and 182 transitions. [2024-06-14 11:44:00,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 355 flow [2024-06-14 11:44:00,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 348 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:44:00,168 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 178 flow [2024-06-14 11:44:00,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-06-14 11:44:00,168 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2024-06-14 11:44:00,169 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 178 flow [2024-06-14 11:44:00,169 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) [2024-06-14 11:44:00,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:00,169 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] [2024-06-14 11:44:00,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:44:00,170 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)] === [2024-06-14 11:44:00,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:00,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1930029718, now seen corresponding path program 1 times [2024-06-14 11:44:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:00,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624937649] [2024-06-14 11:44:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-14 11:44:00,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:00,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624937649] [2024-06-14 11:44:00,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624937649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:00,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:44:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469960113] [2024-06-14 11:44:00,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:00,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:44:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:44:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:44:00,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2024-06-14 11:44:00,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 178 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) [2024-06-14 11:44:00,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:00,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2024-06-14 11:44:00,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:00,537 INFO L124 PetriNetUnfolderBase]: 2128/3568 cut-off events. [2024-06-14 11:44:00,538 INFO L125 PetriNetUnfolderBase]: For 3253/3265 co-relation queries the response was YES. [2024-06-14 11:44:00,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8615 conditions, 3568 events. 2128/3568 cut-off events. For 3253/3265 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 24696 event pairs, 1630 based on Foata normal form. 128/3455 useless extension candidates. Maximal degree in co-relation 8598. Up to 2206 conditions per place. [2024-06-14 11:44:00,556 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 33 selfloop transitions, 2 changer transitions 24/79 dead transitions. [2024-06-14 11:44:00,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 368 flow [2024-06-14 11:44:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:44:00,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:44:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-06-14 11:44:00,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6919642857142857 [2024-06-14 11:44:00,558 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 178 flow. Second operand 4 states and 155 transitions. [2024-06-14 11:44:00,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 368 flow [2024-06-14 11:44:00,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 360 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 11:44:00,561 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 190 flow [2024-06-14 11:44:00,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-14 11:44:00,562 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2024-06-14 11:44:00,562 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 190 flow [2024-06-14 11:44:00,562 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) [2024-06-14 11:44:00,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:00,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:44:00,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:44:00,563 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)] === [2024-06-14 11:44:00,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash 39529239, now seen corresponding path program 1 times [2024-06-14 11:44:00,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:00,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682132902] [2024-06-14 11:44:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:00,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:00,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-14 11:44:00,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:00,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682132902] [2024-06-14 11:44:00,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682132902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:00,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:00,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:44:00,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830731552] [2024-06-14 11:44:00,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:00,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:44:00,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:00,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:44:00,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:44:00,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-14 11:44:00,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-06-14 11:44:00,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:00,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-14 11:44:00,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:01,016 INFO L124 PetriNetUnfolderBase]: 2091/3527 cut-off events. [2024-06-14 11:44:01,017 INFO L125 PetriNetUnfolderBase]: For 3148/3252 co-relation queries the response was YES. [2024-06-14 11:44:01,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8833 conditions, 3527 events. 2091/3527 cut-off events. For 3148/3252 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 23710 event pairs, 376 based on Foata normal form. 52/3495 useless extension candidates. Maximal degree in co-relation 8810. Up to 1342 conditions per place. [2024-06-14 11:44:01,035 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 83 selfloop transitions, 4 changer transitions 5/109 dead transitions. [2024-06-14 11:44:01,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 525 flow [2024-06-14 11:44:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:44:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:44:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-06-14 11:44:01,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7035714285714286 [2024-06-14 11:44:01,037 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 190 flow. Second operand 5 states and 197 transitions. [2024-06-14 11:44:01,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 525 flow [2024-06-14 11:44:01,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 109 transitions, 521 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-14 11:44:01,041 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 201 flow [2024-06-14 11:44:01,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-06-14 11:44:01,042 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2024-06-14 11:44:01,042 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 201 flow [2024-06-14 11:44:01,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-06-14 11:44:01,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:01,042 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] [2024-06-14 11:44:01,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:44:01,043 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)] === [2024-06-14 11:44:01,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:01,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1934305115, now seen corresponding path program 2 times [2024-06-14 11:44:01,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:01,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641447663] [2024-06-14 11:44:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:01,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-14 11:44:01,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:01,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641447663] [2024-06-14 11:44:01,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641447663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:01,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:01,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:44:01,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990209344] [2024-06-14 11:44:01,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:01,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:44:01,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:01,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:44:01,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:44:01,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-14 11:44:01,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-06-14 11:44:01,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:01,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-14 11:44:01,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:01,473 INFO L124 PetriNetUnfolderBase]: 1931/3295 cut-off events. [2024-06-14 11:44:01,473 INFO L125 PetriNetUnfolderBase]: For 3948/3948 co-relation queries the response was YES. [2024-06-14 11:44:01,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8302 conditions, 3295 events. 1931/3295 cut-off events. For 3948/3948 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 22000 event pairs, 333 based on Foata normal form. 52/3288 useless extension candidates. Maximal degree in co-relation 8277. Up to 1136 conditions per place. [2024-06-14 11:44:01,485 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 0 selfloop transitions, 0 changer transitions 106/106 dead transitions. [2024-06-14 11:44:01,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 106 transitions, 500 flow [2024-06-14 11:44:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:44:01,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:44:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-06-14 11:44:01,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6928571428571428 [2024-06-14 11:44:01,488 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 201 flow. Second operand 5 states and 194 transitions. [2024-06-14 11:44:01,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 106 transitions, 500 flow [2024-06-14 11:44:01,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 106 transitions, 492 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 11:44:01,493 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2024-06-14 11:44:01,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2024-06-14 11:44:01,494 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2024-06-14 11:44:01,494 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2024-06-14 11:44:01,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-06-14 11:44:01,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-14 11:44:01,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-14 11:44:01,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-14 11:44:01,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-14 11:44:01,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-14 11:44:01,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-14 11:44:01,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-14 11:44:01,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-14 11:44:01,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:44:01,498 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-06-14 11:44:01,500 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 11:44:01,500 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 11:44:01,503 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-14 11:44:01,503 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-14 11:44:01,504 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 11:44:01 BasicIcfg [2024-06-14 11:44:01,504 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 11:44:01,504 INFO L158 Benchmark]: Toolchain (without parser) took 5114.28ms. Allocated memory was 163.6MB in the beginning and 390.1MB in the end (delta: 226.5MB). Free memory was 126.3MB in the beginning and 114.3MB in the end (delta: 12.0MB). Peak memory consumption was 238.1MB. Max. memory is 16.1GB. [2024-06-14 11:44:01,505 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory was 88.5MB in the beginning and 88.4MB in the end (delta: 119.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:44:01,505 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 129.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:44:01,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.19ms. Allocated memory is still 163.6MB. Free memory was 126.3MB in the beginning and 109.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-14 11:44:01,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.37ms. Allocated memory is still 163.6MB. Free memory was 109.5MB in the beginning and 107.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:44:01,506 INFO L158 Benchmark]: Boogie Preprocessor took 58.89ms. Allocated memory is still 163.6MB. Free memory was 107.0MB in the beginning and 103.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 11:44:01,506 INFO L158 Benchmark]: RCFGBuilder took 720.42ms. Allocated memory is still 163.6MB. Free memory was 103.2MB in the beginning and 87.0MB in the end (delta: 16.3MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2024-06-14 11:44:01,506 INFO L158 Benchmark]: TraceAbstraction took 3969.87ms. Allocated memory was 163.6MB in the beginning and 390.1MB in the end (delta: 226.5MB). Free memory was 85.9MB in the beginning and 114.3MB in the end (delta: -28.4MB). Peak memory consumption was 197.0MB. Max. memory is 16.1GB. [2024-06-14 11:44:01,507 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory was 88.5MB in the beginning and 88.4MB in the end (delta: 119.0kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 129.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.19ms. Allocated memory is still 163.6MB. Free memory was 126.3MB in the beginning and 109.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.37ms. Allocated memory is still 163.6MB. Free memory was 109.5MB in the beginning and 107.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.89ms. Allocated memory is still 163.6MB. Free memory was 107.0MB in the beginning and 103.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 720.42ms. Allocated memory is still 163.6MB. Free memory was 103.2MB in the beginning and 87.0MB in the end (delta: 16.3MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3969.87ms. Allocated memory was 163.6MB in the beginning and 390.1MB in the end (delta: 226.5MB). Free memory was 85.9MB in the beginning and 114.3MB in the end (delta: -28.4MB). Peak memory consumption was 197.0MB. 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, 79 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: 3.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 436 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 331 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1127 IncrementalHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 19 mSDtfsCounter, 1127 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, 0.1s 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, 0.7s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 603 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 5/5 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! [2024-06-14 11:44:01,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE