./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.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-three-array-sum.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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-three-array-sum.wvr.c ./goblint.2024-05-21_14-57-05.files/protection/popl20-three-array-sum.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-bcb38a6-m [2024-06-04 14:30:58,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:30:58,193 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:30:58,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:30:58,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:30:58,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:30:58,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:30:58,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:30:58,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:30:58,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:30:58,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:30:58,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:30:58,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:30:58,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:30:58,235 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:30:58,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:30:58,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:30:58,235 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:30:58,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:30:58,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:30:58,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:30:58,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:30:58,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:30:58,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:30:58,238 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:30:58,238 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:30:58,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:30:58,239 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:30:58,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:30:58,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:30:58,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:30:58,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:30:58,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:30:58,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:30:58,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:30:58,241 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:30:58,241 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:30:58,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:30:58,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:30:58,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:30:58,242 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:30:58,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:30:58,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:30:58,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:30:58,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:30:58,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:30:58,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:30:58,440 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:30:58,441 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:30:58,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2024-06-04 14:30:59,498 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:30:59,638 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:30:59,639 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2024-06-04 14:30:59,644 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a78e3e0/f337ac01f94341c888d81265b30f572c/FLAG341122bc9 [2024-06-04 14:30:59,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a78e3e0/f337ac01f94341c888d81265b30f572c [2024-06-04 14:30:59,656 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:30:59,657 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:30:59,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/popl20-three-array-sum.wvr.yml/witness.yml [2024-06-04 14:30:59,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:30:59,735 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:30:59,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:30:59,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:30:59,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:30:59,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:30:59" (1/2) ... [2024-06-04 14:30:59,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200bb2a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:59, skipping insertion in model container [2024-06-04 14:30:59,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:30:59" (1/2) ... [2024-06-04 14:30:59,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4beb9276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:59, skipping insertion in model container [2024-06-04 14:30:59,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:30:59" (2/2) ... [2024-06-04 14:30:59,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200bb2a1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:30:59, skipping insertion in model container [2024-06-04 14:30:59,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:30:59" (2/2) ... [2024-06-04 14:30:59,745 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:30:59,762 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:30:59,763 INFO L97 edCorrectnessWitness]: Location invariant before [L95-L95] ! multithreaded || 0 <= p [2024-06-04 14:30:59,764 INFO L97 edCorrectnessWitness]: Location invariant before [L97-L97] ! multithreaded || 0 <= p [2024-06-04 14:30:59,764 INFO L97 edCorrectnessWitness]: Location invariant before [L96-L96] ! multithreaded || 0 <= p [2024-06-04 14:30:59,764 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:30:59,764 INFO L106 edCorrectnessWitness]: ghost_update [L94-L94] multithreaded = 1; [2024-06-04 14:30:59,784 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:30:59,964 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:30:59,972 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:31:00,039 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:31:00,053 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:31:00,053 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00 WrapperNode [2024-06-04 14:31:00,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:31:00,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:31:00,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:31:00,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:31:00,060 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 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,075 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 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,100 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 146 [2024-06-04 14:31:00,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:31:00,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:31:00,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:31:00,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:31:00,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,126 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,149 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-06-04 14:31:00,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:31:00,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:31:00,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:31:00,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:31:00,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00" (1/1) ... [2024-06-04 14:31:00,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:31:00,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:31:00,206 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) [2024-06-04 14:31:00,225 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 [2024-06-04 14:31:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:31:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-04 14:31:00,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-04 14:31:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-04 14:31:00,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-04 14:31:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-04 14:31:00,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-04 14:31:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:31:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-04 14:31:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-04 14:31:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-04 14:31:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:31:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:31:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-04 14:31:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:31:00,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:31:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-04 14:31:00,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-04 14:31:00,248 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:31:00,335 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:31:00,336 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:31:00,666 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:31:00,666 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:31:00,870 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:31:00,870 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-04 14:31:00,870 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:31:00 BoogieIcfgContainer [2024-06-04 14:31:00,870 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:31:00,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:31:00,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:31:00,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:31:00,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:30:59" (1/4) ... [2024-06-04 14:31:00,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e86a770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:31:00, skipping insertion in model container [2024-06-04 14:31:00,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:30:59" (2/4) ... [2024-06-04 14:31:00,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e86a770 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:31:00, skipping insertion in model container [2024-06-04 14:31:00,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:31:00" (3/4) ... [2024-06-04 14:31:00,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e86a770 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:31:00, skipping insertion in model container [2024-06-04 14:31:00,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:31:00" (4/4) ... [2024-06-04 14:31:00,880 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-06-04 14:31:00,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:31:00,892 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 14:31:00,892 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:31:00,939 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-04 14:31:00,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 45 transitions, 111 flow [2024-06-04 14:31:00,996 INFO L124 PetriNetUnfolderBase]: 7/42 cut-off events. [2024-06-04 14:31:00,997 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-04 14:31:01,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 7/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-06-04 14:31:01,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 45 transitions, 111 flow [2024-06-04 14:31:01,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 95 flow [2024-06-04 14:31:01,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:31:01,024 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;@22dbe2c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:31:01,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 14:31:01,030 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:31:01,030 INFO L124 PetriNetUnfolderBase]: 4/13 cut-off events. [2024-06-04 14:31:01,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:31:01,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:31:01,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:31:01,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:31:01,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:31:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1043378479, now seen corresponding path program 1 times [2024-06-04 14:31:01,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:31:01,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323469499] [2024-06-04 14:31:01,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:31:01,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:31:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:31:01,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:31:01,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323469499] [2024-06-04 14:31:01,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323469499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:31:01,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:31:01,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:31:01,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34578205] [2024-06-04 14:31:01,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:31:01,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:31:01,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:31:01,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:31:01,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:31:01,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-04 14:31:01,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-06-04 14:31:01,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:31:01,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-04 14:31:01,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:31:01,517 INFO L124 PetriNetUnfolderBase]: 753/1197 cut-off events. [2024-06-04 14:31:01,517 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-06-04 14:31:01,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2343 conditions, 1197 events. 753/1197 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5104 event pairs, 237 based on Foata normal form. 45/1101 useless extension candidates. Maximal degree in co-relation 2064. Up to 669 conditions per place. [2024-06-04 14:31:01,527 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 44 selfloop transitions, 2 changer transitions 1/54 dead transitions. [2024-06-04 14:31:01,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 226 flow [2024-06-04 14:31:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:31:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:31:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-04 14:31:01,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-06-04 14:31:01,538 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 95 flow. Second operand 3 states and 80 transitions. [2024-06-04 14:31:01,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 226 flow [2024-06-04 14:31:01,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 212 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-04 14:31:01,543 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 98 flow [2024-06-04 14:31:01,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2024-06-04 14:31:01,547 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-06-04 14:31:01,547 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 98 flow [2024-06-04 14:31:01,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-06-04 14:31:01,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:31:01,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:31:01,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:31:01,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:31:01,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:31:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash 81781046, now seen corresponding path program 1 times [2024-06-04 14:31:01,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:31:01,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142258315] [2024-06-04 14:31:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:31:01,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:31:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:01,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:31:01,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:31:01,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142258315] [2024-06-04 14:31:01,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142258315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:31:01,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:31:01,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:31:01,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081797122] [2024-06-04 14:31:01,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:31:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:31:01,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:31:01,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:31:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:31:01,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-04 14:31:01,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-06-04 14:31:01,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:31:01,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-04 14:31:01,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:31:02,025 INFO L124 PetriNetUnfolderBase]: 1067/1709 cut-off events. [2024-06-04 14:31:02,026 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2024-06-04 14:31:02,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3509 conditions, 1709 events. 1067/1709 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7906 event pairs, 405 based on Foata normal form. 54/1582 useless extension candidates. Maximal degree in co-relation 906. Up to 924 conditions per place. [2024-06-04 14:31:02,037 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 69 selfloop transitions, 5 changer transitions 0/81 dead transitions. [2024-06-04 14:31:02,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 81 transitions, 340 flow [2024-06-04 14:31:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:31:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:31:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-04 14:31:02,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688888888888889 [2024-06-04 14:31:02,042 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 98 flow. Second operand 5 states and 128 transitions. [2024-06-04 14:31:02,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 81 transitions, 340 flow [2024-06-04 14:31:02,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 81 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:31:02,047 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 135 flow [2024-06-04 14:31:02,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-06-04 14:31:02,049 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-04 14:31:02,050 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 135 flow [2024-06-04 14:31:02,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-06-04 14:31:02,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:31:02,055 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:31:02,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:31:02,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:31:02,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:31:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1094211853, now seen corresponding path program 1 times [2024-06-04 14:31:02,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:31:02,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063751766] [2024-06-04 14:31:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:31:02,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:31:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:31:02,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:31:02,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063751766] [2024-06-04 14:31:02,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063751766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:31:02,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:31:02,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:31:02,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398960184] [2024-06-04 14:31:02,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:31:02,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:31:02,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:31:02,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:31:02,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:31:02,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-04 14:31:02,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-06-04 14:31:02,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:31:02,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-04 14:31:02,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:31:02,437 INFO L124 PetriNetUnfolderBase]: 1553/2433 cut-off events. [2024-06-04 14:31:02,437 INFO L125 PetriNetUnfolderBase]: For 936/975 co-relation queries the response was YES. [2024-06-04 14:31:02,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5655 conditions, 2433 events. 1553/2433 cut-off events. For 936/975 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 11395 event pairs, 1062 based on Foata normal form. 44/2199 useless extension candidates. Maximal degree in co-relation 2739. Up to 1751 conditions per place. [2024-06-04 14:31:02,465 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 32 selfloop transitions, 6 changer transitions 40/86 dead transitions. [2024-06-04 14:31:02,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 86 transitions, 392 flow [2024-06-04 14:31:02,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:31:02,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:31:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-04 14:31:02,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-04 14:31:02,469 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 135 flow. Second operand 6 states and 147 transitions. [2024-06-04 14:31:02,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 86 transitions, 392 flow [2024-06-04 14:31:02,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 86 transitions, 383 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:31:02,475 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 168 flow [2024-06-04 14:31:02,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-04 14:31:02,476 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-04 14:31:02,476 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 168 flow [2024-06-04 14:31:02,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-06-04 14:31:02,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:31:02,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:31:02,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:31:02,477 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:31:02,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:31:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1416900259, now seen corresponding path program 1 times [2024-06-04 14:31:02,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:31:02,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067357949] [2024-06-04 14:31:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:31:02,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:31:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-04 14:31:02,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:31:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067357949] [2024-06-04 14:31:02,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067357949] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 14:31:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842019189] [2024-06-04 14:31:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:31:02,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:31:02,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:31:02,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 14:31:02,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-04 14:31:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:31:02,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-04 14:31:02,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 14:31:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 14:31:02,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 14:31:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 14:31:02,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842019189] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 14:31:02,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 14:31:02,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-06-04 14:31:02,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188421540] [2024-06-04 14:31:02,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 14:31:02,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:31:02,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:31:02,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:31:02,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:31:02,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-04 14:31:02,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 168 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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) [2024-06-04 14:31:02,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:31:02,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-04 14:31:02,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:31:03,276 INFO L124 PetriNetUnfolderBase]: 1829/2770 cut-off events. [2024-06-04 14:31:03,277 INFO L125 PetriNetUnfolderBase]: For 1032/1032 co-relation queries the response was YES. [2024-06-04 14:31:03,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6784 conditions, 2770 events. 1829/2770 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13069 event pairs, 348 based on Foata normal form. 116/2593 useless extension candidates. Maximal degree in co-relation 4163. Up to 470 conditions per place. [2024-06-04 14:31:03,284 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 0 selfloop transitions, 0 changer transitions 161/161 dead transitions. [2024-06-04 14:31:03,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 161 transitions, 792 flow [2024-06-04 14:31:03,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:31:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:31:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 277 transitions. [2024-06-04 14:31:03,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735042735042735 [2024-06-04 14:31:03,285 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 168 flow. Second operand 13 states and 277 transitions. [2024-06-04 14:31:03,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 161 transitions, 792 flow [2024-06-04 14:31:03,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 161 transitions, 756 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 14:31:03,292 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2024-06-04 14:31:03,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2024-06-04 14:31:03,293 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-06-04 14:31:03,293 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2024-06-04 14:31:03,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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) [2024-06-04 14:31:03,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-04 14:31:03,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-04 14:31:03,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-04 14:31:03,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-04 14:31:03,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-04 14:31:03,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-04 14:31:03,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-04 14:31:03,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:31:03,508 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-06-04 14:31:03,510 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 14:31:03,510 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 14:31:03,513 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-04 14:31:03,513 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-04 14:31:03,514 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 02:31:03 BasicIcfg [2024-06-04 14:31:03,515 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 14:31:03,516 INFO L158 Benchmark]: Toolchain (without parser) took 3780.44ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 123.4MB in the beginning and 58.0MB in the end (delta: 65.4MB). Peak memory consumption was 102.2MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,516 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:31:03,516 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:31:03,516 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.53ms. Allocated memory is still 155.2MB. Free memory was 123.4MB in the beginning and 108.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.39ms. Allocated memory is still 155.2MB. Free memory was 108.4MB in the beginning and 106.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,517 INFO L158 Benchmark]: Boogie Preprocessor took 76.57ms. Allocated memory is still 155.2MB. Free memory was 106.6MB in the beginning and 103.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,517 INFO L158 Benchmark]: RCFGBuilder took 691.86ms. Allocated memory is still 155.2MB. Free memory was 103.3MB in the beginning and 47.9MB in the end (delta: 55.4MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,517 INFO L158 Benchmark]: TraceAbstraction took 2642.84ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 47.6MB in the beginning and 58.0MB in the end (delta: -10.4MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2024-06-04 14:31:03,519 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.53ms. Allocated memory is still 155.2MB. Free memory was 123.4MB in the beginning and 108.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.39ms. Allocated memory is still 155.2MB. Free memory was 108.4MB in the beginning and 106.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.57ms. Allocated memory is still 155.2MB. Free memory was 106.6MB in the beginning and 103.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 691.86ms. Allocated memory is still 155.2MB. Free memory was 103.3MB in the beginning and 47.9MB in the end (delta: 55.4MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2642.84ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 47.6MB in the beginning and 58.0MB in the end (delta: -10.4MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 96]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 97]: 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 7 procedures, 58 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 314 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 288 mSDsluCounter, 131 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 121 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 974 IncrementalHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 10 mSDtfsCounter, 974 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=3, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 275 SizeOfPredicates, 3 NumberOfNonLiveVariables, 200 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 13/17 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 14:31:03,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE