./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 76401ed0 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-76401ed-m [2024-06-20 15:38:24,820 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 15:38:24,873 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 15:38:24,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 15:38:24,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 15:38:24,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 15:38:24,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 15:38:24,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 15:38:24,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 15:38:24,907 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 15:38:24,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 15:38:24,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 15:38:24,908 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 15:38:24,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 15:38:24,909 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 15:38:24,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 15:38:24,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 15:38:24,910 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 15:38:24,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 15:38:24,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 15:38:24,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 15:38:24,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 15:38:24,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 15:38:24,911 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 15:38:24,912 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 15:38:24,912 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 15:38:24,912 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 15:38:24,912 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 15:38:24,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 15:38:24,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 15:38:24,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 15:38:24,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 15:38:24,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:38:24,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 15:38:24,914 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 15:38:24,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 15:38:24,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 15:38:24,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 15:38:24,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 15:38:24,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 15:38:24,915 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 15:38:24,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 15:38:24,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 15:38:24,916 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 15:38:25,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 15:38:25,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 15:38:25,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 15:38:25,180 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 15:38:25,181 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 15:38:25,181 INFO L431 ainManager$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 [2024-06-20 15:38:25,315 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 15:38:25,316 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 15:38:25,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2024-06-20 15:38:26,399 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 15:38:26,523 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 15:38:26,523 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2024-06-20 15:38:26,529 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6345ba43/721e535b0c094c68b2aed526084a0f11/FLAG5c478c5db [2024-06-20 15:38:26,539 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6345ba43/721e535b0c094c68b2aed526084a0f11 [2024-06-20 15:38:26,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 15:38:26,540 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 15:38:26,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 15:38:26,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 15:38:26,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 15:38:26,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:38:25" (1/2) ... [2024-06-20 15:38:26,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512e3542 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:26, skipping insertion in model container [2024-06-20 15:38:26,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:38:25" (1/2) ... [2024-06-20 15:38:26,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f2bea75 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:26, skipping insertion in model container [2024-06-20 15:38:26,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:38:26" (2/2) ... [2024-06-20 15:38:26,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512e3542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26, skipping insertion in model container [2024-06-20 15:38:26,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:38:26" (2/2) ... [2024-06-20 15:38:26,548 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 15:38:26,560 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 15:38:26,561 INFO L97 edCorrectnessWitness]: Location invariant before [L140-L140] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-20 15:38:26,561 INFO L97 edCorrectnessWitness]: Location invariant before [L141-L141] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-20 15:38:26,561 INFO L97 edCorrectnessWitness]: Location invariant before [L139-L139] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-20 15:38:26,561 INFO L97 edCorrectnessWitness]: Location invariant before [L142-L142] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-20 15:38:26,561 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 15:38:26,562 INFO L106 edCorrectnessWitness]: ghost_update [L138-L138] multithreaded = 1; [2024-06-20 15:38:26,578 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 15:38:26,769 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:38:26,776 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 15:38:26,826 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:38:26,839 INFO L206 MainTranslator]: Completed translation [2024-06-20 15:38:26,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26 WrapperNode [2024-06-20 15:38:26,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 15:38:26,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 15:38:26,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 15:38:26,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 15:38:26,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,875 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 301 [2024-06-20 15:38:26,875 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 15:38:26,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 15:38:26,876 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 15:38:26,876 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 15:38:26,884 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,887 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,900 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]. [2024-06-20 15:38:26,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 15:38:26,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 15:38:26,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 15:38:26,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 15:38:26,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (1/1) ... [2024-06-20 15:38:26,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:38:26,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 15:38:26,957 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) [2024-06-20 15:38:26,986 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 [2024-06-20 15:38:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 15:38:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-20 15:38:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-20 15:38:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-20 15:38:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-20 15:38:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-20 15:38:27,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-20 15:38:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-20 15:38:27,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-20 15:38:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-20 15:38:27,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-20 15:38:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-20 15:38:27,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-20 15:38:27,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 15:38:27,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-20 15:38:27,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 15:38:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 15:38:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-20 15:38:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 15:38:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 15:38:27,008 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 15:38:27,120 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 15:38:27,122 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 15:38:27,461 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 15:38:27,461 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 15:38:27,767 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 15:38:27,770 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-20 15:38:27,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:38:27 BoogieIcfgContainer [2024-06-20 15:38:27,771 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 15:38:27,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 15:38:27,773 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 15:38:27,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 15:38:27,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:38:25" (1/4) ... [2024-06-20 15:38:27,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321c83d1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:38:27, skipping insertion in model container [2024-06-20 15:38:27,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 03:38:26" (2/4) ... [2024-06-20 15:38:27,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321c83d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:38:27, skipping insertion in model container [2024-06-20 15:38:27,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:26" (3/4) ... [2024-06-20 15:38:27,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321c83d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:38:27, skipping insertion in model container [2024-06-20 15:38:27,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:38:27" (4/4) ... [2024-06-20 15:38:27,779 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2024-06-20 15:38:27,793 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 15:38:27,793 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-20 15:38:27,793 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 15:38:27,840 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-20 15:38:27,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 55 transitions, 138 flow [2024-06-20 15:38:27,903 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-06-20 15:38:27,904 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-20 15:38:27,907 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. [2024-06-20 15:38:27,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 55 transitions, 138 flow [2024-06-20 15:38:27,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 49 transitions, 119 flow [2024-06-20 15:38:27,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 15:38:27,930 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;@21d17a47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 15:38:27,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-20 15:38:27,936 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 15:38:27,936 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-06-20 15:38:27,936 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:38:27,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:38:27,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:38:27,937 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)] === [2024-06-20 15:38:27,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:38:27,941 INFO L85 PathProgramCache]: Analyzing trace with hash -124526226, now seen corresponding path program 1 times [2024-06-20 15:38:27,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:38:27,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743596618] [2024-06-20 15:38:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:38:27,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:38:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:38:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:38:28,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:38:28,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743596618] [2024-06-20 15:38:28,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743596618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:38:28,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:38:28,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 15:38:28,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695911917] [2024-06-20 15:38:28,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:38:28,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 15:38:28,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:38:28,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 15:38:28,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 15:38:28,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-20 15:38:28,387 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) [2024-06-20 15:38:28,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:38:28,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-20 15:38:28,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:38:28,777 INFO L124 PetriNetUnfolderBase]: 1639/2607 cut-off events. [2024-06-20 15:38:28,777 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-06-20 15:38:28,785 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. [2024-06-20 15:38:28,796 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 47 selfloop transitions, 3 changer transitions 2/70 dead transitions. [2024-06-20 15:38:28,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 283 flow [2024-06-20 15:38:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 15:38:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 15:38:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-06-20 15:38:28,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2024-06-20 15:38:28,807 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 119 flow. Second operand 3 states and 122 transitions. [2024-06-20 15:38:28,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 283 flow [2024-06-20 15:38:28,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 259 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-20 15:38:28,815 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 131 flow [2024-06-20 15:38:28,816 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} [2024-06-20 15:38:28,819 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2024-06-20 15:38:28,819 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 131 flow [2024-06-20 15:38:28,819 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) [2024-06-20 15:38:28,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:38:28,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:38:28,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 15:38:28,820 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)] === [2024-06-20 15:38:28,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:38:28,821 INFO L85 PathProgramCache]: Analyzing trace with hash -493343477, now seen corresponding path program 1 times [2024-06-20 15:38:28,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:38:28,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697056554] [2024-06-20 15:38:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:38:28,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:38:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:38:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:38:28,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:38:28,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697056554] [2024-06-20 15:38:28,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697056554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:38:28,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:38:28,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:38:28,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929799639] [2024-06-20 15:38:28,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:38:28,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:38:28,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:38:28,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:38:28,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:38:28,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-20 15:38:28,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-06-20 15:38:28,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:38:28,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-20 15:38:28,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:38:29,228 INFO L124 PetriNetUnfolderBase]: 1659/2680 cut-off events. [2024-06-20 15:38:29,229 INFO L125 PetriNetUnfolderBase]: For 534/612 co-relation queries the response was YES. [2024-06-20 15:38:29,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 2680 events. 1659/2680 cut-off events. For 534/612 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 16411 event pairs, 294 based on Foata normal form. 54/2642 useless extension candidates. Maximal degree in co-relation 1085. Up to 1295 conditions per place. [2024-06-20 15:38:29,244 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 62 selfloop transitions, 4 changer transitions 3/87 dead transitions. [2024-06-20 15:38:29,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 87 transitions, 356 flow [2024-06-20 15:38:29,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 15:38:29,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 15:38:29,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-06-20 15:38:29,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-06-20 15:38:29,247 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 131 flow. Second operand 4 states and 161 transitions. [2024-06-20 15:38:29,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 87 transitions, 356 flow [2024-06-20 15:38:29,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 15:38:29,249 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 146 flow [2024-06-20 15:38:29,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-06-20 15:38:29,249 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-06-20 15:38:29,250 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 146 flow [2024-06-20 15:38:29,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-06-20 15:38:29,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:38:29,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:38:29,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 15:38:29,251 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)] === [2024-06-20 15:38:29,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:38:29,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1193069352, now seen corresponding path program 1 times [2024-06-20 15:38:29,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:38:29,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489918683] [2024-06-20 15:38:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:38:29,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:38:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:38:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:38:29,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:38:29,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489918683] [2024-06-20 15:38:29,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489918683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:38:29,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:38:29,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:38:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740760011] [2024-06-20 15:38:29,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:38:29,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:38:29,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:38:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:38:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:38:29,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-20 15:38:29,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-06-20 15:38:29,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:38:29,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-20 15:38:29,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:38:29,616 INFO L124 PetriNetUnfolderBase]: 1711/2854 cut-off events. [2024-06-20 15:38:29,617 INFO L125 PetriNetUnfolderBase]: For 1553/1657 co-relation queries the response was YES. [2024-06-20 15:38:29,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6452 conditions, 2854 events. 1711/2854 cut-off events. For 1553/1657 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18397 event pairs, 385 based on Foata normal form. 52/2826 useless extension candidates. Maximal degree in co-relation 2399. Up to 1408 conditions per place. [2024-06-20 15:38:29,629 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 60 selfloop transitions, 4 changer transitions 6/88 dead transitions. [2024-06-20 15:38:29,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 379 flow [2024-06-20 15:38:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 15:38:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 15:38:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-06-20 15:38:29,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-06-20 15:38:29,631 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 146 flow. Second operand 4 states and 160 transitions. [2024-06-20 15:38:29,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 379 flow [2024-06-20 15:38:29,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 88 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 15:38:29,634 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 162 flow [2024-06-20 15:38:29,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=52, 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=162, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-06-20 15:38:29,634 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-20 15:38:29,635 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 162 flow [2024-06-20 15:38:29,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-06-20 15:38:29,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:38:29,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:38:29,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 15:38:29,635 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)] === [2024-06-20 15:38:29,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:38:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1240052341, now seen corresponding path program 1 times [2024-06-20 15:38:29,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:38:29,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752441441] [2024-06-20 15:38:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:38:29,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:38:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:38:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:38:29,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:38:29,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752441441] [2024-06-20 15:38:29,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752441441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:38:29,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:38:29,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:38:29,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389747307] [2024-06-20 15:38:29,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:38:29,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:38:29,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:38:29,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:38:29,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:38:29,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-06-20 15:38:29,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-06-20 15:38:29,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:38:29,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-06-20 15:38:29,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:38:30,065 INFO L124 PetriNetUnfolderBase]: 2082/3464 cut-off events. [2024-06-20 15:38:30,065 INFO L125 PetriNetUnfolderBase]: For 3094/3106 co-relation queries the response was YES. [2024-06-20 15:38:30,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8087 conditions, 3464 events. 2082/3464 cut-off events. For 3094/3106 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 23533 event pairs, 1578 based on Foata normal form. 158/3384 useless extension candidates. Maximal degree in co-relation 4387. Up to 2203 conditions per place. [2024-06-20 15:38:30,083 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 30 selfloop transitions, 2 changer transitions 24/77 dead transitions. [2024-06-20 15:38:30,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 341 flow [2024-06-20 15:38:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:38:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:38:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-06-20 15:38:30,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6654545454545454 [2024-06-20 15:38:30,085 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 162 flow. Second operand 5 states and 183 transitions. [2024-06-20 15:38:30,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 341 flow [2024-06-20 15:38:30,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 15:38:30,088 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 176 flow [2024-06-20 15:38:30,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-06-20 15:38:30,089 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-06-20 15:38:30,089 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 176 flow [2024-06-20 15:38:30,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-06-20 15:38:30,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:38:30,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:38:30,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 15:38:30,090 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)] === [2024-06-20 15:38:30,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:38:30,090 INFO L85 PathProgramCache]: Analyzing trace with hash 82246715, now seen corresponding path program 1 times [2024-06-20 15:38:30,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:38:30,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718277332] [2024-06-20 15:38:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:38:30,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:38:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:38:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-20 15:38:30,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:38:30,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718277332] [2024-06-20 15:38:30,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718277332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:38:30,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:38:30,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:38:30,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186963614] [2024-06-20 15:38:30,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:38:30,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:38:30,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:38:30,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:38:30,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:38:30,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-06-20 15:38:30,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-06-20 15:38:30,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:38:30,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-06-20 15:38:30,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:38:30,489 INFO L124 PetriNetUnfolderBase]: 2128/3566 cut-off events. [2024-06-20 15:38:30,490 INFO L125 PetriNetUnfolderBase]: For 3253/3265 co-relation queries the response was YES. [2024-06-20 15:38:30,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8609 conditions, 3566 events. 2128/3566 cut-off events. For 3253/3265 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 24628 event pairs, 1630 based on Foata normal form. 140/3465 useless extension candidates. Maximal degree in co-relation 8592. Up to 2204 conditions per place. [2024-06-20 15:38:30,510 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 31 selfloop transitions, 2 changer transitions 22/76 dead transitions. [2024-06-20 15:38:30,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 354 flow [2024-06-20 15:38:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 15:38:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 15:38:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-06-20 15:38:30,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-06-20 15:38:30,512 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 176 flow. Second operand 4 states and 155 transitions. [2024-06-20 15:38:30,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 354 flow [2024-06-20 15:38:30,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 346 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-20 15:38:30,560 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 188 flow [2024-06-20 15:38:30,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=4, PETRI_FLOW=188, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-06-20 15:38:30,561 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-20 15:38:30,561 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 188 flow [2024-06-20 15:38:30,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-06-20 15:38:30,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:38:30,561 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] [2024-06-20 15:38:30,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 15:38:30,562 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)] === [2024-06-20 15:38:30,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:38:30,562 INFO L85 PathProgramCache]: Analyzing trace with hash 864311053, now seen corresponding path program 1 times [2024-06-20 15:38:30,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:38:30,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396347942] [2024-06-20 15:38:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:38:30,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:38:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:38:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-20 15:38:30,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:38:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396347942] [2024-06-20 15:38:30,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396347942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:38:30,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:38:30,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:38:30,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675358922] [2024-06-20 15:38:30,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:38:30,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:38:30,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:38:30,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:38:30,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:38:30,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-20 15:38:30,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 188 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) [2024-06-20 15:38:30,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:38:30,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-20 15:38:30,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:38:31,048 INFO L124 PetriNetUnfolderBase]: 2091/3526 cut-off events. [2024-06-20 15:38:31,049 INFO L125 PetriNetUnfolderBase]: For 3148/3252 co-relation queries the response was YES. [2024-06-20 15:38:31,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8830 conditions, 3526 events. 2091/3526 cut-off events. For 3148/3252 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 23629 event pairs, 376 based on Foata normal form. 52/3500 useless extension candidates. Maximal degree in co-relation 8807. Up to 1342 conditions per place. [2024-06-20 15:38:31,063 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 81 selfloop transitions, 4 changer transitions 5/108 dead transitions. [2024-06-20 15:38:31,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 519 flow [2024-06-20 15:38:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:38:31,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:38:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-06-20 15:38:31,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-06-20 15:38:31,065 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 188 flow. Second operand 5 states and 200 transitions. [2024-06-20 15:38:31,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 519 flow [2024-06-20 15:38:31,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 108 transitions, 515 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-20 15:38:31,069 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 199 flow [2024-06-20 15:38:31,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=184, 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=199, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-06-20 15:38:31,069 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-20 15:38:31,070 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 199 flow [2024-06-20 15:38:31,070 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) [2024-06-20 15:38:31,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:38:31,070 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] [2024-06-20 15:38:31,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 15:38:31,070 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)] === [2024-06-20 15:38:31,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:38:31,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1543931225, now seen corresponding path program 2 times [2024-06-20 15:38:31,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:38:31,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950776187] [2024-06-20 15:38:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:38:31,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:38:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:38:31,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-20 15:38:31,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:38:31,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950776187] [2024-06-20 15:38:31,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950776187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:38:31,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:38:31,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:38:31,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956086869] [2024-06-20 15:38:31,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:38:31,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:38:31,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:38:31,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:38:31,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:38:31,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-20 15:38:31,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 199 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) [2024-06-20 15:38:31,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:38:31,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-20 15:38:31,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:38:31,531 INFO L124 PetriNetUnfolderBase]: 1931/3294 cut-off events. [2024-06-20 15:38:31,531 INFO L125 PetriNetUnfolderBase]: For 3948/3948 co-relation queries the response was YES. [2024-06-20 15:38:31,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8299 conditions, 3294 events. 1931/3294 cut-off events. For 3948/3948 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 22067 event pairs, 333 based on Foata normal form. 52/3293 useless extension candidates. Maximal degree in co-relation 8274. Up to 1136 conditions per place. [2024-06-20 15:38:31,541 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 0 selfloop transitions, 0 changer transitions 105/105 dead transitions. [2024-06-20 15:38:31,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 494 flow [2024-06-20 15:38:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:38:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:38:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-06-20 15:38:31,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7163636363636363 [2024-06-20 15:38:31,543 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 199 flow. Second operand 5 states and 197 transitions. [2024-06-20 15:38:31,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 494 flow [2024-06-20 15:38:31,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 105 transitions, 486 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-20 15:38:31,548 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-06-20 15:38:31,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=161, 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} [2024-06-20 15:38:31,549 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-20 15:38:31,549 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-06-20 15:38:31,549 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) [2024-06-20 15:38:31,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-20 15:38:31,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-20 15:38:31,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-20 15:38:31,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-20 15:38:31,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-20 15:38:31,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-20 15:38:31,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-20 15:38:31,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-20 15:38:31,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 15:38:31,553 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-06-20 15:38:31,555 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 15:38:31,555 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 15:38:31,558 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-20 15:38:31,558 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-20 15:38:31,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 03:38:31 BasicIcfg [2024-06-20 15:38:31,559 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 15:38:31,559 INFO L158 Benchmark]: Toolchain (without parser) took 5019.25ms. Allocated memory was 132.1MB in the beginning and 585.1MB in the end (delta: 453.0MB). Free memory was 55.2MB in the beginning and 441.9MB in the end (delta: -386.7MB). Peak memory consumption was 184.6MB. Max. memory is 16.1GB. [2024-06-20 15:38:31,560 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 132.1MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:38:31,560 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 132.1MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:38:31,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.09ms. Allocated memory was 132.1MB in the beginning and 178.3MB in the end (delta: 46.1MB). Free memory was 55.0MB in the beginning and 144.1MB in the end (delta: -89.1MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2024-06-20 15:38:31,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.75ms. Allocated memory is still 178.3MB. Free memory was 144.1MB in the beginning and 140.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-20 15:38:31,561 INFO L158 Benchmark]: Boogie Preprocessor took 39.00ms. Allocated memory is still 178.3MB. Free memory was 140.9MB in the beginning and 137.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 15:38:31,561 INFO L158 Benchmark]: RCFGBuilder took 855.69ms. Allocated memory is still 178.3MB. Free memory was 137.8MB in the beginning and 142.5MB in the end (delta: -4.7MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. [2024-06-20 15:38:31,561 INFO L158 Benchmark]: TraceAbstraction took 3786.14ms. Allocated memory was 178.3MB in the beginning and 585.1MB in the end (delta: 406.8MB). Free memory was 142.5MB in the beginning and 441.9MB in the end (delta: -299.3MB). Peak memory consumption was 222.8MB. Max. memory is 16.1GB. [2024-06-20 15:38:31,562 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 0.14ms. Allocated memory is still 132.1MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 132.1MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.09ms. Allocated memory was 132.1MB in the beginning and 178.3MB in the end (delta: 46.1MB). Free memory was 55.0MB in the beginning and 144.1MB in the end (delta: -89.1MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.75ms. Allocated memory is still 178.3MB. Free memory was 144.1MB in the beginning and 140.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.00ms. Allocated memory is still 178.3MB. Free memory was 140.9MB in the beginning and 137.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 855.69ms. Allocated memory is still 178.3MB. Free memory was 137.8MB in the beginning and 142.5MB in the end (delta: -4.7MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3786.14ms. Allocated memory was 178.3MB in the beginning and 585.1MB in the end (delta: 406.8MB). Free memory was 142.5MB in the beginning and 441.9MB in the end (delta: -299.3MB). Peak memory consumption was 222.8MB. 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: 3.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 437 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 329 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1110 IncrementalHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 16 mSDtfsCounter, 1110 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=199occurred 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, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 562 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! [2024-06-20 15:38:31,590 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