./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longer-2.i --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/mutex-meet/triangular-longer-2.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/pthread/triangular-longer-2.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/triangular-longer-2.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 18:16:16,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 18:16:16,138 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 18:16:16,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 18:16:16,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 18:16:16,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 18:16:16,180 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 18:16:16,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 18:16:16,181 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 18:16:16,182 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 18:16:16,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 18:16:16,182 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 18:16:16,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 18:16:16,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 18:16:16,185 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 18:16:16,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 18:16:16,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 18:16:16,190 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 18:16:16,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 18:16:16,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 18:16:16,191 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 18:16:16,191 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 18:16:16,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 18:16:16,192 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 18:16:16,192 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 18:16:16,192 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 18:16:16,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 18:16:16,193 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 18:16:16,193 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 18:16:16,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 18:16:16,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 18:16:16,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 18:16:16,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:16:16,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 18:16:16,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 18:16:16,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 18:16:16,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 18:16:16,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 18:16:16,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 18:16:16,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 18:16:16,197 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 18:16:16,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 18:16:16,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 18:16:16,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 18:16:16,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 18:16:16,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 18:16:16,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 18:16:16,451 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 18:16:16,452 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 18:16:16,453 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2024-06-20 18:16:17,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 18:16:18,017 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 18:16:18,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2024-06-20 18:16:18,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f3b87bb/15316fa0f412405b9b9db212d55cb345/FLAGc71ae1241 [2024-06-20 18:16:18,311 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f3b87bb/15316fa0f412405b9b9db212d55cb345 [2024-06-20 18:16:18,313 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 18:16:18,314 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 18:16:18,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/triangular-longer-2.yml/witness.yml [2024-06-20 18:16:18,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 18:16:18,401 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 18:16:18,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 18:16:18,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 18:16:18,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 18:16:18,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:16:18" (1/2) ... [2024-06-20 18:16:18,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab9cc9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:16:18, skipping insertion in model container [2024-06-20 18:16:18,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:16:18" (1/2) ... [2024-06-20 18:16:18,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d0f96ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:16:18, skipping insertion in model container [2024-06-20 18:16:18,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:16:18" (2/2) ... [2024-06-20 18:16:18,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab9cc9a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18, skipping insertion in model container [2024-06-20 18:16:18,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:16:18" (2/2) ... [2024-06-20 18:16:18,424 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 18:16:18,461 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 18:16:18,462 INFO L97 edCorrectnessWitness]: Location invariant before [L715-L715] (((! multithreaded || ((((0 <= j && 4 <= j) && j % 2 == 0) && j != 0) && j != 1)) && (! multithreaded || ((-7LL + (long long )i) + (long long )j >= 0LL && (1LL - (long long )i) + (long long )j >= 0LL))) && (! multithreaded || ((((((((0 <= i && 0 <= j) && 3 <= i) && 4 <= j) && i % 2 == 1) && j % 2 == 0) && i != 0) && j != 0) && j != 1))) && (! multithreaded || (((0 <= i && 3 <= i) && i % 2 == 1) && i != 0)) [2024-06-20 18:16:18,462 INFO L97 edCorrectnessWitness]: Location invariant before [L714-L714] (((! multithreaded || ((((0 <= j && 4 <= j) && j % 2 == 0) && j != 0) && j != 1)) && (! multithreaded || ((-7LL + (long long )i) + (long long )j >= 0LL && (1LL - (long long )i) + (long long )j >= 0LL))) && (! multithreaded || ((((((((0 <= i && 0 <= j) && 3 <= i) && 4 <= j) && i % 2 == 1) && j % 2 == 0) && i != 0) && j != 0) && j != 1))) && (! multithreaded || (((0 <= i && 3 <= i) && i % 2 == 1) && i != 0)) [2024-06-20 18:16:18,462 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 18:16:18,462 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] multithreaded = 1; [2024-06-20 18:16:18,497 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 18:16:18,767 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:16:18,777 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 18:16:18,876 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:16:18,905 INFO L206 MainTranslator]: Completed translation [2024-06-20 18:16:18,908 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18 WrapperNode [2024-06-20 18:16:18,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 18:16:18,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 18:16:18,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 18:16:18,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 18:16:18,916 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 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:18,933 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 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:18,965 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2024-06-20 18:16:18,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 18:16:18,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 18:16:18,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 18:16:18,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 18:16:18,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:18,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:18,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:19,003 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-20 18:16:19,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:19,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:19,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:19,036 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:19,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:19,038 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:19,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 18:16:19,053 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 18:16:19,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 18:16:19,053 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 18:16:19,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18" (1/1) ... [2024-06-20 18:16:19,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:16:19,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 18:16:19,115 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 18:16:19,141 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 18:16:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-20 18:16:19,157 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-20 18:16:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-20 18:16:19,158 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-20 18:16:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 18:16:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 18:16:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 18:16:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 18:16:19,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 18:16:19,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 18:16:19,160 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 18:16:19,305 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 18:16:19,308 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 18:16:19,509 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 18:16:19,510 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 18:16:19,571 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 18:16:19,571 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-20 18:16:19,572 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:16:19 BoogieIcfgContainer [2024-06-20 18:16:19,572 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 18:16:19,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 18:16:19,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 18:16:19,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 18:16:19,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 06:16:18" (1/4) ... [2024-06-20 18:16:19,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443ffc91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 06:16:19, skipping insertion in model container [2024-06-20 18:16:19,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:16:18" (2/4) ... [2024-06-20 18:16:19,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443ffc91 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:16:19, skipping insertion in model container [2024-06-20 18:16:19,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:16:18" (3/4) ... [2024-06-20 18:16:19,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443ffc91 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:16:19, skipping insertion in model container [2024-06-20 18:16:19,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:16:19" (4/4) ... [2024-06-20 18:16:19,578 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2024-06-20 18:16:19,590 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 18:16:19,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 18:16:19,591 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 18:16:19,618 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 18:16:19,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 58 flow [2024-06-20 18:16:19,658 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-06-20 18:16:19,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 18:16:19,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 23 events. 2/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-06-20 18:16:19,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 58 flow [2024-06-20 18:16:19,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 52 flow [2024-06-20 18:16:19,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 18:16:19,675 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;@cd9931f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 18:16:19,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 18:16:19,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 18:16:19,679 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 18:16:19,679 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 18:16:19,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:16:19,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 18:16:19,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:16:19,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:16:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash 184288307, now seen corresponding path program 1 times [2024-06-20 18:16:19,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:16:19,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117489668] [2024-06-20 18:16:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:19,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:16:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:20,401 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 18:16:20,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:16:20,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117489668] [2024-06-20 18:16:20,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117489668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:16:20,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:16:20,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 18:16:20,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621902636] [2024-06-20 18:16:20,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:16:20,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 18:16:20,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:16:20,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 18:16:20,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 18:16:20,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-06-20 18:16:20,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 18:16:20,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:20,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-06-20 18:16:20,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:20,598 INFO L124 PetriNetUnfolderBase]: 172/314 cut-off events. [2024-06-20 18:16:20,598 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-20 18:16:20,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 314 events. 172/314 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1212 event pairs, 54 based on Foata normal form. 9/310 useless extension candidates. Maximal degree in co-relation 602. Up to 211 conditions per place. [2024-06-20 18:16:20,604 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 23 selfloop transitions, 3 changer transitions 2/34 dead transitions. [2024-06-20 18:16:20,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 133 flow [2024-06-20 18:16:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 18:16:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 18:16:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-20 18:16:20,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.72 [2024-06-20 18:16:20,618 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-20 18:16:20,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 133 flow [2024-06-20 18:16:20,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 18:16:20,625 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 69 flow [2024-06-20 18:16:20,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2024-06-20 18:16:20,631 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-20 18:16:20,631 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 69 flow [2024-06-20 18:16:20,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 18:16:20,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:16:20,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:16:20,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 18:16:20,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:16:20,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:16:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1177819896, now seen corresponding path program 1 times [2024-06-20 18:16:20,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:16:20,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386086116] [2024-06-20 18:16:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:20,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:16:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:20,953 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 18:16:20,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:16:20,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386086116] [2024-06-20 18:16:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386086116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:16:20,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:16:20,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 18:16:20,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88460167] [2024-06-20 18:16:20,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:16:20,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 18:16:20,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:16:20,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 18:16:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 18:16:20,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-06-20 18:16:20,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 18:16:20,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:20,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-06-20 18:16:20,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:21,093 INFO L124 PetriNetUnfolderBase]: 160/307 cut-off events. [2024-06-20 18:16:21,094 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-06-20 18:16:21,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 307 events. 160/307 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1164 event pairs, 37 based on Foata normal form. 21/327 useless extension candidates. Maximal degree in co-relation 673. Up to 103 conditions per place. [2024-06-20 18:16:21,096 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 17 selfloop transitions, 2 changer transitions 19/44 dead transitions. [2024-06-20 18:16:21,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 193 flow [2024-06-20 18:16:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 18:16:21,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 18:16:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-20 18:16:21,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648 [2024-06-20 18:16:21,098 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 69 flow. Second operand 5 states and 81 transitions. [2024-06-20 18:16:21,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 193 flow [2024-06-20 18:16:21,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 18:16:21,100 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 68 flow [2024-06-20 18:16:21,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2024-06-20 18:16:21,101 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-20 18:16:21,101 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 68 flow [2024-06-20 18:16:21,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 18:16:21,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:16:21,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:16:21,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 18:16:21,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:16:21,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:16:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2028359468, now seen corresponding path program 1 times [2024-06-20 18:16:21,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:16:21,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678046737] [2024-06-20 18:16:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:21,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:16:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:21,265 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 18:16:21,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:16:21,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678046737] [2024-06-20 18:16:21,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678046737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:16:21,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:16:21,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 18:16:21,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317617921] [2024-06-20 18:16:21,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:16:21,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:16:21,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:16:21,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:16:21,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:16:21,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 25 [2024-06-20 18:16:21,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 18:16:21,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:21,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 25 [2024-06-20 18:16:21,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:21,349 INFO L124 PetriNetUnfolderBase]: 151/295 cut-off events. [2024-06-20 18:16:21,349 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-20 18:16:21,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 295 events. 151/295 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1050 event pairs, 76 based on Foata normal form. 9/301 useless extension candidates. Maximal degree in co-relation 655. Up to 143 conditions per place. [2024-06-20 18:16:21,352 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 19 selfloop transitions, 3 changer transitions 5/29 dead transitions. [2024-06-20 18:16:21,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 138 flow [2024-06-20 18:16:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 18:16:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 18:16:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2024-06-20 18:16:21,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-20 18:16:21,354 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 68 flow. Second operand 4 states and 49 transitions. [2024-06-20 18:16:21,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 138 flow [2024-06-20 18:16:21,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 126 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-20 18:16:21,356 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 68 flow [2024-06-20 18:16:21,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2024-06-20 18:16:21,357 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2024-06-20 18:16:21,357 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 68 flow [2024-06-20 18:16:21,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 18:16:21,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:16:21,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:16:21,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 18:16:21,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:16:21,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:16:21,359 INFO L85 PathProgramCache]: Analyzing trace with hash 26489585, now seen corresponding path program 1 times [2024-06-20 18:16:21,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:16:21,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841887893] [2024-06-20 18:16:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:21,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:16:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:21,579 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 18:16:21,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:16:21,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841887893] [2024-06-20 18:16:21,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841887893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:16:21,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:16:21,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 18:16:21,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131474426] [2024-06-20 18:16:21,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:16:21,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:16:21,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:16:21,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:16:21,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:16:21,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-06-20 18:16:21,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 18:16:21,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:21,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-06-20 18:16:21,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:21,679 INFO L124 PetriNetUnfolderBase]: 154/295 cut-off events. [2024-06-20 18:16:21,680 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-06-20 18:16:21,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 295 events. 154/295 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 864 event pairs, 28 based on Foata normal form. 18/313 useless extension candidates. Maximal degree in co-relation 670. Up to 79 conditions per place. [2024-06-20 18:16:21,682 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 28 selfloop transitions, 5 changer transitions 7/43 dead transitions. [2024-06-20 18:16:21,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 208 flow [2024-06-20 18:16:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 18:16:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 18:16:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-06-20 18:16:21,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-20 18:16:21,684 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 68 flow. Second operand 6 states and 90 transitions. [2024-06-20 18:16:21,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 208 flow [2024-06-20 18:16:21,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 18:16:21,685 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 96 flow [2024-06-20 18:16:21,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2024-06-20 18:16:21,686 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-20 18:16:21,686 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 96 flow [2024-06-20 18:16:21,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 18:16:21,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:16:21,687 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:16:21,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 18:16:21,687 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:16:21,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:16:21,688 INFO L85 PathProgramCache]: Analyzing trace with hash -833124626, now seen corresponding path program 1 times [2024-06-20 18:16:21,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:16:21,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794438133] [2024-06-20 18:16:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:21,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:16:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:16:21,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:16:21,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794438133] [2024-06-20 18:16:21,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794438133] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-20 18:16:21,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409481811] [2024-06-20 18:16:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:21,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-20 18:16:21,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 18:16:21,984 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) [2024-06-20 18:16:22,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-20 18:16:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:22,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 15 conjunts are in the unsatisfiable core [2024-06-20 18:16:22,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-20 18:16:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:16:22,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-20 18:16:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:16:22,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409481811] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-20 18:16:22,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-20 18:16:22,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 19 [2024-06-20 18:16:22,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134424111] [2024-06-20 18:16:22,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-20 18:16:22,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-06-20 18:16:22,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:16:22,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-06-20 18:16:22,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2024-06-20 18:16:22,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 25 [2024-06-20 18:16:22,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 96 flow. Second operand has 21 states, 21 states have (on average 8.285714285714286) internal successors, (174), 21 states have internal predecessors, (174), 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 18:16:22,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:22,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 25 [2024-06-20 18:16:22,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:22,880 INFO L124 PetriNetUnfolderBase]: 163/319 cut-off events. [2024-06-20 18:16:22,881 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2024-06-20 18:16:22,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 319 events. 163/319 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 959 event pairs, 22 based on Foata normal form. 18/337 useless extension candidates. Maximal degree in co-relation 775. Up to 67 conditions per place. [2024-06-20 18:16:22,884 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2024-06-20 18:16:22,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 260 flow [2024-06-20 18:16:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 18:16:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 18:16:22,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-20 18:16:22,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577777777777778 [2024-06-20 18:16:22,890 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 96 flow. Second operand 9 states and 103 transitions. [2024-06-20 18:16:22,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 260 flow [2024-06-20 18:16:22,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 252 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-20 18:16:22,893 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-20 18:16:22,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-06-20 18:16:22,895 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2024-06-20 18:16:22,895 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-20 18:16:22,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.285714285714286) internal successors, (174), 21 states have internal predecessors, (174), 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 18:16:22,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 18:16:22,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 18:16:22,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 18:16:22,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 18:16:22,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-20 18:16:23,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-20 18:16:23,112 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-20 18:16:23,115 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 18:16:23,115 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 18:16:23,122 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 18:16:23,122 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 18:16:23,123 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 06:16:23 BasicIcfg [2024-06-20 18:16:23,123 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 18:16:23,124 INFO L158 Benchmark]: Toolchain (without parser) took 4722.45ms. Allocated memory was 161.5MB in the beginning and 245.4MB in the end (delta: 83.9MB). Free memory was 85.8MB in the beginning and 185.7MB in the end (delta: -99.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:16:23,124 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:16:23,125 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 161.5MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:16:23,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.38ms. Allocated memory is still 161.5MB. Free memory was 85.6MB in the beginning and 111.5MB in the end (delta: -25.9MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2024-06-20 18:16:23,125 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.53ms. Allocated memory is still 161.5MB. Free memory was 110.9MB in the beginning and 109.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:16:23,126 INFO L158 Benchmark]: Boogie Preprocessor took 86.73ms. Allocated memory is still 161.5MB. Free memory was 108.8MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 18:16:23,126 INFO L158 Benchmark]: RCFGBuilder took 518.78ms. Allocated memory is still 161.5MB. Free memory was 106.7MB in the beginning and 83.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-20 18:16:23,126 INFO L158 Benchmark]: TraceAbstraction took 3550.42ms. Allocated memory was 161.5MB in the beginning and 245.4MB in the end (delta: 83.9MB). Free memory was 82.9MB in the beginning and 185.7MB in the end (delta: -102.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:16:23,128 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 161.5MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 505.38ms. Allocated memory is still 161.5MB. Free memory was 85.6MB in the beginning and 111.5MB in the end (delta: -25.9MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.53ms. Allocated memory is still 161.5MB. Free memory was 110.9MB in the beginning and 109.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 86.73ms. Allocated memory is still 161.5MB. Free memory was 108.8MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 518.78ms. Allocated memory is still 161.5MB. Free memory was 106.7MB in the beginning and 83.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3550.42ms. Allocated memory was 161.5MB in the beginning and 245.4MB in the end (delta: 83.9MB). Free memory was 82.9MB in the beginning and 185.7MB in the end (delta: -102.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 714]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 715]: 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 5 procedures, 36 locations, 4 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: 3.5s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 283 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 243 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 667 IncrementalHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 12 mSDtfsCounter, 667 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=4, 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, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 808 SizeOfPredicates, 4 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/12 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-20 18:16:23,167 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