./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-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-2.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/triangular-2.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/triangular-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-bcb38a6-m [2024-06-03 21:04:09,784 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 21:04:09,849 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 21:04:09,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 21:04:09,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 21:04:09,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 21:04:09,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 21:04:09,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 21:04:09,876 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 21:04:09,879 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 21:04:09,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 21:04:09,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 21:04:09,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 21:04:09,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 21:04:09,882 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 21:04:09,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 21:04:09,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 21:04:09,883 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 21:04:09,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 21:04:09,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 21:04:09,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 21:04:09,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 21:04:09,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 21:04:09,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 21:04:09,885 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 21:04:09,886 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 21:04:09,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 21:04:09,886 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 21:04:09,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 21:04:09,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 21:04:09,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 21:04:09,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 21:04:09,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:04:09,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 21:04:09,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 21:04:09,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 21:04:09,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 21:04:09,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 21:04:09,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 21:04:09,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 21:04:09,890 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 21:04:09,890 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 21:04:09,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 21:04:09,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 21:04:10,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 21:04:10,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 21:04:10,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 21:04:10,154 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 21:04:10,155 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 21:04:10,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-2.i [2024-06-03 21:04:11,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 21:04:11,483 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 21:04:11,484 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i [2024-06-03 21:04:11,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8dfd73aa/e220faab95c646599562a8517f1b286b/FLAG3921268f5 [2024-06-03 21:04:11,571 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8dfd73aa/e220faab95c646599562a8517f1b286b [2024-06-03 21:04:11,573 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 21:04:11,574 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 21:04:11,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/triangular-2.yml/witness.yml [2024-06-03 21:04:11,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 21:04:11,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 21:04:11,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 21:04:11,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 21:04:11,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 21:04:11,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:04:11" (1/2) ... [2024-06-03 21:04:11,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a29356d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:04:11, skipping insertion in model container [2024-06-03 21:04:11,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:04:11" (1/2) ... [2024-06-03 21:04:11,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26062e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:04:11, skipping insertion in model container [2024-06-03 21:04:11,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:04:11" (2/2) ... [2024-06-03 21:04:11,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a29356d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:11, skipping insertion in model container [2024-06-03 21:04:11,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:04:11" (2/2) ... [2024-06-03 21:04:11,649 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 21:04:11,674 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 21:04:11,675 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)) [2024-06-03 21:04:11,676 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)) [2024-06-03 21:04:11,676 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 21:04:11,676 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] multithreaded = 1; [2024-06-03 21:04:11,712 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 21:04:12,006 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:04:12,013 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 21:04:12,095 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:04:12,129 INFO L206 MainTranslator]: Completed translation [2024-06-03 21:04:12,130 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12 WrapperNode [2024-06-03 21:04:12,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 21:04:12,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 21:04:12,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 21:04:12,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 21:04:12,135 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 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,148 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 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,164 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2024-06-03 21:04:12,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 21:04:12,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 21:04:12,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 21:04:12,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 21:04:12,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,184 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]. [2024-06-03 21:04:12,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 21:04:12,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 21:04:12,195 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 21:04:12,195 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 21:04:12,196 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12" (1/1) ... [2024-06-03 21:04:12,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:04:12,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:04:12,222 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) [2024-06-03 21:04:12,227 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 [2024-06-03 21:04:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-03 21:04:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-03 21:04:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-03 21:04:12,251 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-03 21:04:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 21:04:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 21:04:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 21:04:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 21:04:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 21:04:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 21:04:12,253 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 21:04:12,334 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 21:04:12,336 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 21:04:12,502 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 21:04:12,503 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 21:04:12,571 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 21:04:12,572 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-03 21:04:12,572 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:04:12 BoogieIcfgContainer [2024-06-03 21:04:12,572 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 21:04:12,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 21:04:12,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 21:04:12,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 21:04:12,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 09:04:11" (1/4) ... [2024-06-03 21:04:12,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210e3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 09:04:12, skipping insertion in model container [2024-06-03 21:04:12,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:04:11" (2/4) ... [2024-06-03 21:04:12,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210e3eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 09:04:12, skipping insertion in model container [2024-06-03 21:04:12,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:04:12" (3/4) ... [2024-06-03 21:04:12,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210e3eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 09:04:12, skipping insertion in model container [2024-06-03 21:04:12,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:04:12" (4/4) ... [2024-06-03 21:04:12,585 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2024-06-03 21:04:12,601 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 21:04:12,602 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 21:04:12,602 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 21:04:12,640 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 21:04:12,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 60 flow [2024-06-03 21:04:12,702 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2024-06-03 21:04:12,712 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 21:04:12,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 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. 0/20 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-06-03 21:04:12,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 26 transitions, 60 flow [2024-06-03 21:04:12,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 54 flow [2024-06-03 21:04:12,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 21:04:12,732 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;@14b66b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 21:04:12,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 21:04:12,736 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 21:04:12,736 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 21:04:12,737 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 21:04:12,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:04:12,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 21:04:12,738 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)] === [2024-06-03 21:04:12,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:04:12,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1504835347, now seen corresponding path program 1 times [2024-06-03 21:04:12,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:04:12,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256990582] [2024-06-03 21:04:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:04:12,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:04:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:04:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:04:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:04:13,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256990582] [2024-06-03 21:04:13,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256990582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:04:13,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:04:13,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 21:04:13,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114699817] [2024-06-03 21:04:13,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:04:13,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 21:04:13,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:04:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 21:04:13,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 21:04:13,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2024-06-03 21:04:13,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-06-03 21:04:13,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:04:13,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2024-06-03 21:04:13,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:04:13,574 INFO L124 PetriNetUnfolderBase]: 172/320 cut-off events. [2024-06-03 21:04:13,574 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-03 21:04:13,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 320 events. 172/320 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1277 event pairs, 45 based on Foata normal form. 9/314 useless extension candidates. Maximal degree in co-relation 607. Up to 211 conditions per place. [2024-06-03 21:04:13,579 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 25 selfloop transitions, 3 changer transitions 2/35 dead transitions. [2024-06-03 21:04:13,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 139 flow [2024-06-03 21:04:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 21:04:13,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 21:04:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-03 21:04:13,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6794871794871795 [2024-06-03 21:04:13,593 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 54 flow. Second operand 3 states and 53 transitions. [2024-06-03 21:04:13,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 139 flow [2024-06-03 21:04:13,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 21:04:13,597 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 71 flow [2024-06-03 21:04:13,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2024-06-03 21:04:13,603 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-03 21:04:13,604 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 71 flow [2024-06-03 21:04:13,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-06-03 21:04:13,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:04:13,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:04:13,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 21:04:13,605 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)] === [2024-06-03 21:04:13,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:04:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash -311529974, now seen corresponding path program 1 times [2024-06-03 21:04:13,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:04:13,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819551678] [2024-06-03 21:04:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:04:13,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:04:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:04:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:04:13,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:04:13,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819551678] [2024-06-03 21:04:13,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819551678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:04:13,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:04:13,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 21:04:13,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917046504] [2024-06-03 21:04:13,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:04:13,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 21:04:13,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:04:13,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 21:04:13,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 21:04:13,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2024-06-03 21:04:13,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-06-03 21:04:13,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:04:13,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2024-06-03 21:04:13,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:04:14,042 INFO L124 PetriNetUnfolderBase]: 160/314 cut-off events. [2024-06-03 21:04:14,043 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-06-03 21:04:14,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 314 events. 160/314 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1247 event pairs, 37 based on Foata normal form. 21/331 useless extension candidates. Maximal degree in co-relation 679. Up to 103 conditions per place. [2024-06-03 21:04:14,045 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 19 selfloop transitions, 2 changer transitions 19/45 dead transitions. [2024-06-03 21:04:14,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 45 transitions, 199 flow [2024-06-03 21:04:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:04:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:04:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-03 21:04:14,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-03 21:04:14,046 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 71 flow. Second operand 5 states and 78 transitions. [2024-06-03 21:04:14,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 45 transitions, 199 flow [2024-06-03 21:04:14,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:04:14,048 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 70 flow [2024-06-03 21:04:14,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2024-06-03 21:04:14,049 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-03 21:04:14,049 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 70 flow [2024-06-03 21:04:14,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-06-03 21:04:14,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:04:14,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:04:14,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 21:04:14,050 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)] === [2024-06-03 21:04:14,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:04:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash 437445374, now seen corresponding path program 1 times [2024-06-03 21:04:14,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:04:14,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8154664] [2024-06-03 21:04:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:04:14,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:04:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:04:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:04:14,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:04:14,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8154664] [2024-06-03 21:04:14,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8154664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:04:14,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:04:14,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 21:04:14,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365805714] [2024-06-03 21:04:14,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:04:14,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:04:14,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:04:14,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:04:14,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:04:14,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-06-03 21:04:14,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-06-03 21:04:14,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:04:14,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-06-03 21:04:14,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:04:14,289 INFO L124 PetriNetUnfolderBase]: 151/299 cut-off events. [2024-06-03 21:04:14,290 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2024-06-03 21:04:14,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 299 events. 151/299 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1108 event pairs, 76 based on Foata normal form. 9/305 useless extension candidates. Maximal degree in co-relation 658. Up to 144 conditions per place. [2024-06-03 21:04:14,291 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 20 selfloop transitions, 3 changer transitions 5/30 dead transitions. [2024-06-03 21:04:14,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 142 flow [2024-06-03 21:04:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 21:04:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 21:04:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2024-06-03 21:04:14,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-03 21:04:14,293 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 70 flow. Second operand 4 states and 50 transitions. [2024-06-03 21:04:14,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 142 flow [2024-06-03 21:04:14,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 130 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 21:04:14,295 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 70 flow [2024-06-03 21:04:14,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2024-06-03 21:04:14,296 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2024-06-03 21:04:14,296 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 70 flow [2024-06-03 21:04:14,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-06-03 21:04:14,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:04:14,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:04:14,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 21:04:14,297 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)] === [2024-06-03 21:04:14,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:04:14,298 INFO L85 PathProgramCache]: Analyzing trace with hash 503097737, now seen corresponding path program 1 times [2024-06-03 21:04:14,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:04:14,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861744024] [2024-06-03 21:04:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:04:14,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:04:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:04:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:04:14,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:04:14,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861744024] [2024-06-03 21:04:14,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861744024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:04:14,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:04:14,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 21:04:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092265722] [2024-06-03 21:04:14,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:04:14,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:04:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:04:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:04:14,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:04:14,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2024-06-03 21:04:14,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-06-03 21:04:14,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:04:14,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2024-06-03 21:04:14,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:04:14,563 INFO L124 PetriNetUnfolderBase]: 154/293 cut-off events. [2024-06-03 21:04:14,563 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-06-03 21:04:14,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 293 events. 154/293 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 860 event pairs, 28 based on Foata normal form. 18/308 useless extension candidates. Maximal degree in co-relation 667. Up to 79 conditions per place. [2024-06-03 21:04:14,567 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 30 selfloop transitions, 5 changer transitions 7/44 dead transitions. [2024-06-03 21:04:14,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 214 flow [2024-06-03 21:04:14,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 21:04:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 21:04:14,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-03 21:04:14,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-06-03 21:04:14,570 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 70 flow. Second operand 6 states and 86 transitions. [2024-06-03 21:04:14,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 214 flow [2024-06-03 21:04:14,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 21:04:14,571 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 98 flow [2024-06-03 21:04:14,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2024-06-03 21:04:14,573 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-03 21:04:14,573 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 98 flow [2024-06-03 21:04:14,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-06-03 21:04:14,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:04:14,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:04:14,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 21:04:14,574 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)] === [2024-06-03 21:04:14,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:04:14,575 INFO L85 PathProgramCache]: Analyzing trace with hash 825029066, now seen corresponding path program 1 times [2024-06-03 21:04:14,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:04:14,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572651101] [2024-06-03 21:04:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:04:14,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:04:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:04:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:04:14,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:04:14,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572651101] [2024-06-03 21:04:14,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572651101] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 21:04:14,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200014566] [2024-06-03 21:04:14,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:04:14,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:04:14,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:04:14,837 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) [2024-06-03 21:04:14,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-03 21:04:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:04:14,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 15 conjunts are in the unsatisfiable core [2024-06-03 21:04:14,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 21:04:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:04:15,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-03 21:04:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:04:15,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200014566] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-03 21:04:15,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-03 21:04:15,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 7] total 19 [2024-06-03 21:04:15,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173074800] [2024-06-03 21:04:15,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:04:15,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 21:04:15,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:04:15,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 21:04:15,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2024-06-03 21:04:15,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-06-03 21:04:15,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 98 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:04:15,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:04:15,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-06-03 21:04:15,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:04:15,509 INFO L124 PetriNetUnfolderBase]: 136/266 cut-off events. [2024-06-03 21:04:15,510 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2024-06-03 21:04:15,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 266 events. 136/266 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 823 event pairs, 80 based on Foata normal form. 9/272 useless extension candidates. Maximal degree in co-relation 646. Up to 228 conditions per place. [2024-06-03 21:04:15,513 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2024-06-03 21:04:15,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 136 flow [2024-06-03 21:04:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 21:04:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 21:04:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2024-06-03 21:04:15,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41346153846153844 [2024-06-03 21:04:15,518 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 98 flow. Second operand 4 states and 43 transitions. [2024-06-03 21:04:15,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 136 flow [2024-06-03 21:04:15,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 128 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 21:04:15,521 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2024-06-03 21:04:15,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2024-06-03 21:04:15,522 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2024-06-03 21:04:15,522 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2024-06-03 21:04:15,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:04:15,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 21:04:15,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 21:04:15,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 21:04:15,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 21:04:15,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-03 21:04:15,737 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 [2024-06-03 21:04:15,738 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-03 21:04:15,740 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 21:04:15,740 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 21:04:15,744 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 21:04:15,744 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 21:04:15,744 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 09:04:15 BasicIcfg [2024-06-03 21:04:15,745 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 21:04:15,746 INFO L158 Benchmark]: Toolchain (without parser) took 4105.79ms. Allocated memory was 165.7MB in the beginning and 245.4MB in the end (delta: 79.7MB). Free memory was 136.7MB in the beginning and 172.2MB in the end (delta: -35.5MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2024-06-03 21:04:15,746 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:04:15,747 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:04:15,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.08ms. Allocated memory is still 165.7MB. Free memory was 136.7MB in the beginning and 111.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-03 21:04:15,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.73ms. Allocated memory is still 165.7MB. Free memory was 111.5MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 21:04:15,748 INFO L158 Benchmark]: Boogie Preprocessor took 30.07ms. Allocated memory is still 165.7MB. Free memory was 109.4MB in the beginning and 107.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 21:04:15,748 INFO L158 Benchmark]: RCFGBuilder took 377.12ms. Allocated memory is still 165.7MB. Free memory was 107.2MB in the beginning and 83.8MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-03 21:04:15,748 INFO L158 Benchmark]: TraceAbstraction took 3170.77ms. Allocated memory was 165.7MB in the beginning and 245.4MB in the end (delta: 79.7MB). Free memory was 83.3MB in the beginning and 172.2MB in the end (delta: -88.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:04:15,749 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 165.7MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 489.08ms. Allocated memory is still 165.7MB. Free memory was 136.7MB in the beginning and 111.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.73ms. Allocated memory is still 165.7MB. Free memory was 111.5MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.07ms. Allocated memory is still 165.7MB. Free memory was 109.4MB in the beginning and 107.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 377.12ms. Allocated memory is still 165.7MB. Free memory was 107.2MB in the beginning and 83.8MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3170.77ms. Allocated memory was 165.7MB in the beginning and 245.4MB in the end (delta: 79.7MB). Free memory was 83.3MB in the beginning and 172.2MB in the end (delta: -88.9MB). 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, 37 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: 3.1s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 220 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 173 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 360 IncrementalHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 10 mSDtfsCounter, 360 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=4, InterpolantAutomatonStates: 22, 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, 1.8s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 879 SizeOfPredicates, 4 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 4/12 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! [2024-06-03 21:04:15,769 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