./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-1.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-1.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-1.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/triangular-1.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 17:44:44,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 17:44:44,980 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 17:44:44,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 17:44:44,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 17:44:45,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 17:44:45,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 17:44:45,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 17:44:45,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 17:44:45,015 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 17:44:45,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 17:44:45,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 17:44:45,016 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 17:44:45,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 17:44:45,018 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 17:44:45,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 17:44:45,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 17:44:45,018 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 17:44:45,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 17:44:45,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 17:44:45,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 17:44:45,019 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 17:44:45,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 17:44:45,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 17:44:45,020 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 17:44:45,020 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 17:44:45,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 17:44:45,021 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 17:44:45,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 17:44:45,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 17:44:45,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 17:44:45,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 17:44:45,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 17:44:45,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 17:44:45,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 17:44:45,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 17:44:45,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 17:44:45,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 17:44:45,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 17:44:45,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 17:44:45,024 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 17:44:45,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 17:44:45,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 17:44:45,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 17:44:45,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 17:44:45,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 17:44:45,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 17:44:45,270 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 17:44:45,270 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 17:44:45,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2024-06-20 17:44:46,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 17:44:46,405 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 17:44:46,406 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2024-06-20 17:44:46,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca4fedff/1cfbf31ae99e4d5fb6431e43a7b4d217/FLAGf6b8d3c4d [2024-06-20 17:44:46,444 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca4fedff/1cfbf31ae99e4d5fb6431e43a7b4d217 [2024-06-20 17:44:46,446 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 17:44:46,449 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 17:44:46,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/triangular-1.yml/witness.yml [2024-06-20 17:44:46,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 17:44:46,520 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 17:44:46,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 17:44:46,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 17:44:46,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 17:44:46,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 05:44:46" (1/2) ... [2024-06-20 17:44:46,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415b039e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:44:46, skipping insertion in model container [2024-06-20 17:44:46,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 05:44:46" (1/2) ... [2024-06-20 17:44:46,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68ba73eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:44:46, skipping insertion in model container [2024-06-20 17:44:46,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:44:46" (2/2) ... [2024-06-20 17:44:46,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415b039e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46, skipping insertion in model container [2024-06-20 17:44:46,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:44:46" (2/2) ... [2024-06-20 17:44:46,528 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 17:44:46,557 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 17:44:46,558 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 17:44:46,558 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 17:44:46,558 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 17:44:46,559 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] multithreaded = 1; [2024-06-20 17:44:46,594 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 17:44:46,890 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 17:44:46,899 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 17:44:47,003 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 17:44:47,034 INFO L206 MainTranslator]: Completed translation [2024-06-20 17:44:47,036 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:47 WrapperNode [2024-06-20 17:44:47,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 17:44:47,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 17:44:47,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 17:44:47,037 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 17:44:47,042 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,077 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,103 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2024-06-20 17:44:47,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 17:44:47,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 17:44:47,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 17:44:47,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 17:44:47,112 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,113 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,117 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,135 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 17:44:47,135 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,135 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,148 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,151 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,155 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,156 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 17:44:47,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 17:44:47,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 17:44:47,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 17:44:47,163 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 05:44:47" (1/1) ... [2024-06-20 17:44:47,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 17:44:47,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 17:44:47,191 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 17:44:47,212 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 17:44:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-20 17:44:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-20 17:44:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-20 17:44:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-20 17:44:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 17:44:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 17:44:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 17:44:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 17:44:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 17:44:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 17:44:47,225 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 17:44:47,399 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 17:44:47,401 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 17:44:47,598 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 17:44:47,600 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 17:44:47,671 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 17:44:47,672 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-20 17:44:47,672 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 05:44:47 BoogieIcfgContainer [2024-06-20 17:44:47,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 17:44:47,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 17:44:47,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 17:44:47,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 17:44:47,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 05:44:46" (1/4) ... [2024-06-20 17:44:47,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596c7bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 05:44:47, skipping insertion in model container [2024-06-20 17:44:47,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:44:46" (2/4) ... [2024-06-20 17:44:47,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596c7bab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 05:44:47, skipping insertion in model container [2024-06-20 17:44:47,677 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 05:44:47" (3/4) ... [2024-06-20 17:44:47,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596c7bab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 05:44:47, skipping insertion in model container [2024-06-20 17:44:47,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 05:44:47" (4/4) ... [2024-06-20 17:44:47,678 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2024-06-20 17:44:47,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 17:44:47,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 17:44:47,694 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 17:44:47,727 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 17:44:47,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 58 flow [2024-06-20 17:44:47,769 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-06-20 17:44:47,770 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 17:44:47,772 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 17:44:47,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 58 flow [2024-06-20 17:44:47,775 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 52 flow [2024-06-20 17:44:47,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 17:44:47,794 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;@d1cc710, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 17:44:47,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 17:44:47,797 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 17:44:47,797 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 17:44:47,797 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 17:44:47,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:47,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 17:44:47,798 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 17:44:47,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:47,802 INFO L85 PathProgramCache]: Analyzing trace with hash 184288307, now seen corresponding path program 1 times [2024-06-20 17:44:47,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:47,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901144999] [2024-06-20 17:44:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:47,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:48,291 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 17:44:48,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:48,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901144999] [2024-06-20 17:44:48,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901144999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:48,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:48,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 17:44:48,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749224068] [2024-06-20 17:44:48,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:48,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 17:44:48,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:48,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 17:44:48,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 17:44:48,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-06-20 17:44:48,355 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 17:44:48,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:48,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-06-20 17:44:48,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:48,500 INFO L124 PetriNetUnfolderBase]: 172/314 cut-off events. [2024-06-20 17:44:48,500 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-20 17:44:48,502 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 17:44:48,504 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 23 selfloop transitions, 3 changer transitions 2/34 dead transitions. [2024-06-20 17:44:48,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 133 flow [2024-06-20 17:44:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 17:44:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 17:44:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-20 17:44:48,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.72 [2024-06-20 17:44:48,516 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-20 17:44:48,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 133 flow [2024-06-20 17:44:48,518 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 17:44:48,520 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 69 flow [2024-06-20 17:44:48,522 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 17:44:48,525 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-20 17:44:48,525 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 69 flow [2024-06-20 17:44:48,525 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 17:44:48,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:48,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:48,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 17:44:48,527 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 17:44:48,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:48,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1177819896, now seen corresponding path program 1 times [2024-06-20 17:44:48,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:48,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536887408] [2024-06-20 17:44:48,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:48,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:48,754 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 17:44:48,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:48,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536887408] [2024-06-20 17:44:48,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536887408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:48,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:48,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 17:44:48,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617126998] [2024-06-20 17:44:48,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:48,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 17:44:48,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:48,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 17:44:48,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 17:44:48,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-06-20 17:44:48,784 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 17:44:48,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:48,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-06-20 17:44:48,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:48,925 INFO L124 PetriNetUnfolderBase]: 160/307 cut-off events. [2024-06-20 17:44:48,926 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-06-20 17:44:48,927 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 17:44:48,929 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 17 selfloop transitions, 2 changer transitions 19/44 dead transitions. [2024-06-20 17:44:48,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 193 flow [2024-06-20 17:44:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 17:44:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 17:44:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-20 17:44:48,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648 [2024-06-20 17:44:48,933 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 69 flow. Second operand 5 states and 81 transitions. [2024-06-20 17:44:48,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 193 flow [2024-06-20 17:44:48,935 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 17:44:48,938 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 68 flow [2024-06-20 17:44:48,938 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 17:44:48,939 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-20 17:44:48,940 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 68 flow [2024-06-20 17:44:48,940 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 17:44:48,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:48,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:48,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 17:44:48,941 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 17:44:48,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:48,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2028359468, now seen corresponding path program 1 times [2024-06-20 17:44:48,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:48,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484773744] [2024-06-20 17:44:48,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:48,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:49,137 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 17:44:49,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484773744] [2024-06-20 17:44:49,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484773744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:49,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:49,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 17:44:49,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99040241] [2024-06-20 17:44:49,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:49,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 17:44:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 17:44:49,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 17:44:49,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 25 [2024-06-20 17:44:49,154 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 17:44:49,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:49,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 25 [2024-06-20 17:44:49,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:49,235 INFO L124 PetriNetUnfolderBase]: 151/295 cut-off events. [2024-06-20 17:44:49,235 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-20 17:44:49,238 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 17:44:49,239 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 19 selfloop transitions, 3 changer transitions 5/29 dead transitions. [2024-06-20 17:44:49,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 138 flow [2024-06-20 17:44:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 17:44:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 17:44:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2024-06-20 17:44:49,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-20 17:44:49,243 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 68 flow. Second operand 4 states and 49 transitions. [2024-06-20 17:44:49,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 138 flow [2024-06-20 17:44:49,246 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 17:44:49,246 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 68 flow [2024-06-20 17:44:49,246 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 17:44:49,247 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2024-06-20 17:44:49,248 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 68 flow [2024-06-20 17:44:49,248 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 17:44:49,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:49,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:49,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 17:44:49,249 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 17:44:49,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:49,250 INFO L85 PathProgramCache]: Analyzing trace with hash 26489585, now seen corresponding path program 1 times [2024-06-20 17:44:49,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:49,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384939951] [2024-06-20 17:44:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:49,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:49,456 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 17:44:49,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:49,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384939951] [2024-06-20 17:44:49,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384939951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:49,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:49,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 17:44:49,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230739091] [2024-06-20 17:44:49,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:49,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 17:44:49,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:49,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 17:44:49,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-20 17:44:49,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-06-20 17:44:49,478 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 17:44:49,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:49,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-06-20 17:44:49,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:49,555 INFO L124 PetriNetUnfolderBase]: 154/295 cut-off events. [2024-06-20 17:44:49,556 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-06-20 17:44:49,556 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 17:44:49,557 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 28 selfloop transitions, 5 changer transitions 7/43 dead transitions. [2024-06-20 17:44:49,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 208 flow [2024-06-20 17:44:49,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 17:44:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 17:44:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-06-20 17:44:49,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-20 17:44:49,559 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 68 flow. Second operand 6 states and 90 transitions. [2024-06-20 17:44:49,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 208 flow [2024-06-20 17:44:49,573 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 17:44:49,574 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 96 flow [2024-06-20 17:44:49,574 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 17:44:49,575 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-20 17:44:49,575 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 96 flow [2024-06-20 17:44:49,575 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 17:44:49,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:49,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:49,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 17:44:49,576 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 17:44:49,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash -833124626, now seen corresponding path program 1 times [2024-06-20 17:44:49,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:49,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753340211] [2024-06-20 17:44:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:49,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:49,793 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 17:44:49,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:49,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753340211] [2024-06-20 17:44:49,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753340211] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-20 17:44:49,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85328442] [2024-06-20 17:44:49,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:49,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-20 17:44:49,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 17:44:49,795 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 17:44:49,823 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 17:44:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:49,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 15 conjunts are in the unsatisfiable core [2024-06-20 17:44:49,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-20 17:44:49,987 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 17:44:49,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-20 17:44:50,250 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 17:44:50,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85328442] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-20 17:44:50,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-20 17:44:50,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 19 [2024-06-20 17:44:50,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825488802] [2024-06-20 17:44:50,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-20 17:44:50,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-06-20 17:44:50,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:50,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-06-20 17:44:50,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2024-06-20 17:44:50,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 25 [2024-06-20 17:44:50,319 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 17:44:50,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:50,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 25 [2024-06-20 17:44:50,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:50,454 INFO L124 PetriNetUnfolderBase]: 163/319 cut-off events. [2024-06-20 17:44:50,454 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2024-06-20 17:44:50,455 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 17:44:50,455 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2024-06-20 17:44:50,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 260 flow [2024-06-20 17:44:50,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:44:50,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:44:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-20 17:44:50,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577777777777778 [2024-06-20 17:44:50,458 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 96 flow. Second operand 9 states and 103 transitions. [2024-06-20 17:44:50,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 260 flow [2024-06-20 17:44:50,459 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 17:44:50,460 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-20 17:44:50,460 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 17:44:50,460 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2024-06-20 17:44:50,461 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-20 17:44:50,461 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 17:44:50,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 17:44:50,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 17:44:50,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 17:44:50,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 17:44:50,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-20 17:44:50,675 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 17:44:50,675 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-20 17:44:50,678 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 17:44:50,678 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 17:44:50,681 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 17:44:50,681 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 17:44:50,682 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 05:44:50 BasicIcfg [2024-06-20 17:44:50,682 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 17:44:50,683 INFO L158 Benchmark]: Toolchain (without parser) took 4162.37ms. Allocated memory was 163.6MB in the beginning and 230.7MB in the end (delta: 67.1MB). Free memory was 101.6MB in the beginning and 159.5MB in the end (delta: -57.9MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2024-06-20 17:44:50,683 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 163.6MB. Free memory was 124.8MB in the beginning and 124.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 17:44:50,683 INFO L158 Benchmark]: Witness Parser took 0.21ms. Allocated memory is still 163.6MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 17:44:50,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.05ms. Allocated memory is still 163.6MB. Free memory was 101.6MB in the beginning and 76.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-20 17:44:50,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.79ms. Allocated memory is still 163.6MB. Free memory was 76.4MB in the beginning and 74.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 17:44:50,687 INFO L158 Benchmark]: Boogie Preprocessor took 56.96ms. Allocated memory is still 163.6MB. Free memory was 74.2MB in the beginning and 72.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 17:44:50,687 INFO L158 Benchmark]: RCFGBuilder took 510.16ms. Allocated memory is still 163.6MB. Free memory was 72.2MB in the beginning and 113.0MB in the end (delta: -40.8MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2024-06-20 17:44:50,687 INFO L158 Benchmark]: TraceAbstraction took 3008.62ms. Allocated memory was 163.6MB in the beginning and 230.7MB in the end (delta: 67.1MB). Free memory was 112.2MB in the beginning and 159.5MB in the end (delta: -47.3MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2024-06-20 17:44:50,689 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 163.6MB. Free memory was 124.8MB in the beginning and 124.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.21ms. Allocated memory is still 163.6MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 515.05ms. Allocated memory is still 163.6MB. Free memory was 101.6MB in the beginning and 76.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.79ms. Allocated memory is still 163.6MB. Free memory was 76.4MB in the beginning and 74.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.96ms. Allocated memory is still 163.6MB. Free memory was 74.2MB in the beginning and 72.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 510.16ms. Allocated memory is still 163.6MB. Free memory was 72.2MB in the beginning and 113.0MB in the end (delta: -40.8MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3008.62ms. Allocated memory was 163.6MB in the beginning and 230.7MB in the end (delta: 67.1MB). Free memory was 112.2MB in the beginning and 159.5MB in the end (delta: -47.3MB). Peak memory consumption was 22.5MB. 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: 2.9s, 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, 1.5s 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 17:44:50,710 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