./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe033_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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-wmm/safe033_tso.i ./goblint.2024-06-19_11-23-25.files/protection/safe033_tso.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-eb4cb34-m [2024-06-21 15:57:37,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 15:57:37,863 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 15:57:37,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 15:57:37,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 15:57:37,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 15:57:37,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 15:57:37,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 15:57:37,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 15:57:37,895 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 15:57:37,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 15:57:37,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 15:57:37,896 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 15:57:37,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 15:57:37,897 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 15:57:37,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 15:57:37,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 15:57:37,898 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 15:57:37,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 15:57:37,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 15:57:37,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 15:57:37,899 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 15:57:37,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 15:57:37,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 15:57:37,899 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 15:57:37,900 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 15:57:37,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 15:57:37,900 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 15:57:37,901 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 15:57:37,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 15:57:37,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 15:57:37,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 15:57:37,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 15:57:37,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 15:57:37,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 15:57:37,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 15:57:37,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 15:57:37,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 15:57:37,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 15:57:37,903 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 15:57:37,903 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 15:57:37,903 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 15:57:37,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 15:57:37,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 15:57:38,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 15:57:38,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 15:57:38,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 15:57:38,140 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 15:57:38,141 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 15:57:38,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe033_tso.yml/witness.yml [2024-06-21 15:57:38,222 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 15:57:38,223 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 15:57:38,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-21 15:57:39,244 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 15:57:39,474 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 15:57:39,477 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-21 15:57:39,494 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd99abf1/c6b6bb6f60ad4b658651582fea5819a4/FLAG5d560ccfe [2024-06-21 15:57:39,507 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd99abf1/c6b6bb6f60ad4b658651582fea5819a4 [2024-06-21 15:57:39,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 15:57:39,509 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 15:57:39,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 15:57:39,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 15:57:39,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 15:57:39,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 03:57:38" (1/2) ... [2024-06-21 15:57:39,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7037de86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:57:39, skipping insertion in model container [2024-06-21 15:57:39,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 03:57:38" (1/2) ... [2024-06-21 15:57:39,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6559d3d6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:57:39, skipping insertion in model container [2024-06-21 15:57:39,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 03:57:39" (2/2) ... [2024-06-21 15:57:39,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7037de86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:39, skipping insertion in model container [2024-06-21 15:57:39,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 03:57:39" (2/2) ... [2024-06-21 15:57:39,519 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 15:57:39,544 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 15:57:39,545 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] (((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-21 15:57:39,545 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] (((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-21 15:57:39,545 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 15:57:39,546 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-21 15:57:39,580 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 15:57:39,851 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 15:57:39,858 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 15:57:39,946 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 15:57:40,028 INFO L206 MainTranslator]: Completed translation [2024-06-21 15:57:40,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40 WrapperNode [2024-06-21 15:57:40,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 15:57:40,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 15:57:40,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 15:57:40,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 15:57:40,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,057 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2024-06-21 15:57:40,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 15:57:40,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 15:57:40,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 15:57:40,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 15:57:40,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,088 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,106 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]. [2024-06-21 15:57:40,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 15:57:40,137 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 15:57:40,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 15:57:40,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 15:57:40,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (1/1) ... [2024-06-21 15:57:40,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 15:57:40,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 15:57:40,171 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) [2024-06-21 15:57:40,194 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 [2024-06-21 15:57:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 15:57:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 15:57:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 15:57:40,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 15:57:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 15:57:40,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 15:57:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 15:57:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 15:57:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 15:57:40,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 15:57:40,205 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 15:57:40,315 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 15:57:40,316 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 15:57:40,455 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 15:57:40,456 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 15:57:40,514 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 15:57:40,522 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 15:57:40,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 03:57:40 BoogieIcfgContainer [2024-06-21 15:57:40,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 15:57:40,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 15:57:40,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 15:57:40,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 15:57:40,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 03:57:38" (1/4) ... [2024-06-21 15:57:40,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640b405f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 03:57:40, skipping insertion in model container [2024-06-21 15:57:40,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 03:57:39" (2/4) ... [2024-06-21 15:57:40,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640b405f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 03:57:40, skipping insertion in model container [2024-06-21 15:57:40,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:57:40" (3/4) ... [2024-06-21 15:57:40,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640b405f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 03:57:40, skipping insertion in model container [2024-06-21 15:57:40,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 03:57:40" (4/4) ... [2024-06-21 15:57:40,534 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2024-06-21 15:57:40,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 15:57:40,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 15:57:40,548 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 15:57:40,591 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 15:57:40,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-21 15:57:40,644 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-21 15:57:40,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 15:57:40,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 15:57:40,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-21 15:57:40,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-21 15:57:40,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 15:57:40,668 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;@6e1de5f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 15:57:40,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 15:57:40,672 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 15:57:40,672 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 15:57:40,672 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 15:57:40,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:40,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 15:57:40,673 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)] === [2024-06-21 15:57:40,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash 188073949, now seen corresponding path program 1 times [2024-06-21 15:57:40,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:40,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725740578] [2024-06-21 15:57:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:40,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:40,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:40,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725740578] [2024-06-21 15:57:40,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725740578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:40,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:40,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 15:57:40,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44484888] [2024-06-21 15:57:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:40,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 15:57:40,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:40,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 15:57:40,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 15:57:40,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2024-06-21 15:57:40,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-06-21 15:57:40,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:40,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2024-06-21 15:57:40,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:41,054 INFO L124 PetriNetUnfolderBase]: 83/182 cut-off events. [2024-06-21 15:57:41,055 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-21 15:57:41,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 182 events. 83/182 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 694 event pairs, 43 based on Foata normal form. 1/172 useless extension candidates. Maximal degree in co-relation 343. Up to 153 conditions per place. [2024-06-21 15:57:41,058 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 18 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-21 15:57:41,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 107 flow [2024-06-21 15:57:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 15:57:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 15:57:41,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-06-21 15:57:41,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2024-06-21 15:57:41,072 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 62 transitions. [2024-06-21 15:57:41,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 107 flow [2024-06-21 15:57:41,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 15:57:41,076 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-21 15:57:41,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-21 15:57:41,080 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-21 15:57:41,080 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-21 15:57:41,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-06-21 15:57:41,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:41,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:41,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 15:57:41,081 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)] === [2024-06-21 15:57:41,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash 350470908, now seen corresponding path program 1 times [2024-06-21 15:57:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:41,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458598814] [2024-06-21 15:57:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:41,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:41,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:41,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458598814] [2024-06-21 15:57:41,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458598814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:41,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:41,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 15:57:41,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862742712] [2024-06-21 15:57:41,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:41,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 15:57:41,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 15:57:41,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 15:57:41,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2024-06-21 15:57:41,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-06-21 15:57:41,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:41,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2024-06-21 15:57:41,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:41,264 INFO L124 PetriNetUnfolderBase]: 80/177 cut-off events. [2024-06-21 15:57:41,268 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-21 15:57:41,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 177 events. 80/177 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 669 event pairs, 34 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 387. Up to 139 conditions per place. [2024-06-21 15:57:41,270 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 22 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-21 15:57:41,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 149 flow [2024-06-21 15:57:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 15:57:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 15:57:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-06-21 15:57:41,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-21 15:57:41,273 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 81 transitions. [2024-06-21 15:57:41,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 149 flow [2024-06-21 15:57:41,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 15:57:41,275 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-21 15:57:41,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-21 15:57:41,279 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-21 15:57:41,279 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-21 15:57:41,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-06-21 15:57:41,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:41,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:41,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 15:57:41,281 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)] === [2024-06-21 15:57:41,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:41,283 INFO L85 PathProgramCache]: Analyzing trace with hash -944611366, now seen corresponding path program 1 times [2024-06-21 15:57:41,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:41,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835416336] [2024-06-21 15:57:41,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:41,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:41,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:41,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835416336] [2024-06-21 15:57:41,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835416336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:41,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:41,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 15:57:41,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629224356] [2024-06-21 15:57:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:41,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 15:57:41,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 15:57:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 15:57:41,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:41,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-06-21 15:57:41,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:41,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:41,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:41,503 INFO L124 PetriNetUnfolderBase]: 101/209 cut-off events. [2024-06-21 15:57:41,509 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-06-21 15:57:41,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 209 events. 101/209 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 775 event pairs, 48 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 521. Up to 182 conditions per place. [2024-06-21 15:57:41,515 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 22 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2024-06-21 15:57:41,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 165 flow [2024-06-21 15:57:41,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 15:57:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 15:57:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-06-21 15:57:41,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-21 15:57:41,519 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 4 states and 74 transitions. [2024-06-21 15:57:41,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 165 flow [2024-06-21 15:57:41,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 156 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 15:57:41,522 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 109 flow [2024-06-21 15:57:41,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-21 15:57:41,523 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2024-06-21 15:57:41,523 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 109 flow [2024-06-21 15:57:41,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-06-21 15:57:41,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:41,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:41,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 15:57:41,525 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:41,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1962259378, now seen corresponding path program 1 times [2024-06-21 15:57:41,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:41,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265091686] [2024-06-21 15:57:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:41,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:41,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:41,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265091686] [2024-06-21 15:57:41,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265091686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:41,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:41,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:57:41,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459557215] [2024-06-21 15:57:41,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:41,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:57:41,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:41,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:57:41,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:57:41,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:41,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-06-21 15:57:41,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:41,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:41,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:41,806 INFO L124 PetriNetUnfolderBase]: 97/205 cut-off events. [2024-06-21 15:57:41,807 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-06-21 15:57:41,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 205 events. 97/205 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 744 event pairs, 14 based on Foata normal form. 4/208 useless extension candidates. Maximal degree in co-relation 537. Up to 141 conditions per place. [2024-06-21 15:57:41,808 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 29 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-21 15:57:41,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 217 flow [2024-06-21 15:57:41,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:57:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:57:41,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-21 15:57:41,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-06-21 15:57:41,811 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 109 flow. Second operand 6 states and 109 transitions. [2024-06-21 15:57:41,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 217 flow [2024-06-21 15:57:41,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 15:57:41,813 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 125 flow [2024-06-21 15:57:41,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=125, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-06-21 15:57:41,815 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-21 15:57:41,815 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 125 flow [2024-06-21 15:57:41,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-06-21 15:57:41,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:41,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:41,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 15:57:41,818 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)] === [2024-06-21 15:57:41,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:41,818 INFO L85 PathProgramCache]: Analyzing trace with hash 763944755, now seen corresponding path program 1 times [2024-06-21 15:57:41,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:41,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540744901] [2024-06-21 15:57:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:41,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:41,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:41,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540744901] [2024-06-21 15:57:41,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540744901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:41,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:41,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 15:57:41,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136818230] [2024-06-21 15:57:41,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:41,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 15:57:41,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 15:57:41,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 15:57:41,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:41,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-06-21 15:57:41,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:41,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:41,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:41,932 INFO L124 PetriNetUnfolderBase]: 99/209 cut-off events. [2024-06-21 15:57:41,933 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-06-21 15:57:41,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 209 events. 99/209 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 779 event pairs, 26 based on Foata normal form. 2/209 useless extension candidates. Maximal degree in co-relation 598. Up to 152 conditions per place. [2024-06-21 15:57:41,934 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2024-06-21 15:57:41,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 243 flow [2024-06-21 15:57:41,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 15:57:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 15:57:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-21 15:57:41,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-21 15:57:41,935 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 125 flow. Second operand 5 states and 93 transitions. [2024-06-21 15:57:41,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 243 flow [2024-06-21 15:57:41,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 227 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 15:57:41,937 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 175 flow [2024-06-21 15:57:41,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-21 15:57:41,938 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-21 15:57:41,938 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 175 flow [2024-06-21 15:57:41,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-06-21 15:57:41,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:41,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:41,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 15:57:41,952 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:41,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:41,952 INFO L85 PathProgramCache]: Analyzing trace with hash -136101703, now seen corresponding path program 1 times [2024-06-21 15:57:41,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:41,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417907115] [2024-06-21 15:57:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:41,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:42,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:42,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417907115] [2024-06-21 15:57:42,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417907115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:42,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:42,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 15:57:42,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240590081] [2024-06-21 15:57:42,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:42,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 15:57:42,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:42,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 15:57:42,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 15:57:42,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:42,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-06-21 15:57:42,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:42,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:42,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:42,085 INFO L124 PetriNetUnfolderBase]: 102/218 cut-off events. [2024-06-21 15:57:42,085 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-06-21 15:57:42,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 218 events. 102/218 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 816 event pairs, 26 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 706. Up to 154 conditions per place. [2024-06-21 15:57:42,087 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 28 selfloop transitions, 13 changer transitions 0/47 dead transitions. [2024-06-21 15:57:42,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 306 flow [2024-06-21 15:57:42,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 15:57:42,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 15:57:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-06-21 15:57:42,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2024-06-21 15:57:42,089 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 175 flow. Second operand 5 states and 97 transitions. [2024-06-21 15:57:42,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 306 flow [2024-06-21 15:57:42,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 287 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-21 15:57:42,092 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 202 flow [2024-06-21 15:57:42,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-06-21 15:57:42,095 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-06-21 15:57:42,095 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 202 flow [2024-06-21 15:57:42,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-06-21 15:57:42,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:42,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:42,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 15:57:42,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:42,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:42,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1514268919, now seen corresponding path program 2 times [2024-06-21 15:57:42,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883302324] [2024-06-21 15:57:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:42,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:42,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:42,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883302324] [2024-06-21 15:57:42,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883302324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:42,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:42,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 15:57:42,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467008243] [2024-06-21 15:57:42,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:42,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 15:57:42,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:42,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 15:57:42,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 15:57:42,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:42,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-06-21 15:57:42,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:42,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:42,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:42,208 INFO L124 PetriNetUnfolderBase]: 97/207 cut-off events. [2024-06-21 15:57:42,208 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2024-06-21 15:57:42,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 207 events. 97/207 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 758 event pairs, 27 based on Foata normal form. 2/207 useless extension candidates. Maximal degree in co-relation 690. Up to 149 conditions per place. [2024-06-21 15:57:42,210 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 12 changer transitions 0/43 dead transitions. [2024-06-21 15:57:42,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 290 flow [2024-06-21 15:57:42,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 15:57:42,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 15:57:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-21 15:57:42,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2024-06-21 15:57:42,211 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 202 flow. Second operand 5 states and 92 transitions. [2024-06-21 15:57:42,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 290 flow [2024-06-21 15:57:42,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 271 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-21 15:57:42,213 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 214 flow [2024-06-21 15:57:42,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-21 15:57:42,214 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-21 15:57:42,214 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 214 flow [2024-06-21 15:57:42,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-06-21 15:57:42,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:42,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:42,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 15:57:42,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:42,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:42,216 INFO L85 PathProgramCache]: Analyzing trace with hash -288476910, now seen corresponding path program 1 times [2024-06-21 15:57:42,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:42,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247321149] [2024-06-21 15:57:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:42,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:42,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:42,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247321149] [2024-06-21 15:57:42,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247321149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:42,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:42,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:57:42,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809885401] [2024-06-21 15:57:42,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:42,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:57:42,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:57:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:57:42,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:42,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-06-21 15:57:42,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:42,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:42,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:42,370 INFO L124 PetriNetUnfolderBase]: 98/210 cut-off events. [2024-06-21 15:57:42,370 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2024-06-21 15:57:42,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 210 events. 98/210 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 777 event pairs, 26 based on Foata normal form. 4/212 useless extension candidates. Maximal degree in co-relation 706. Up to 140 conditions per place. [2024-06-21 15:57:42,372 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 15 changer transitions 0/46 dead transitions. [2024-06-21 15:57:42,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 316 flow [2024-06-21 15:57:42,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:57:42,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:57:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-21 15:57:42,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-21 15:57:42,374 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 214 flow. Second operand 6 states and 107 transitions. [2024-06-21 15:57:42,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 316 flow [2024-06-21 15:57:42,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 280 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-21 15:57:42,378 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 219 flow [2024-06-21 15:57:42,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-06-21 15:57:42,380 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-06-21 15:57:42,380 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 219 flow [2024-06-21 15:57:42,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-06-21 15:57:42,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:42,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:42,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 15:57:42,381 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:42,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:42,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1944882118, now seen corresponding path program 1 times [2024-06-21 15:57:42,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:42,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13248527] [2024-06-21 15:57:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:42,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:42,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:42,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13248527] [2024-06-21 15:57:42,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13248527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:42,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:42,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:57:42,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740163145] [2024-06-21 15:57:42,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:42,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:57:42,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:42,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:57:42,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:57:42,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:42,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-06-21 15:57:42,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:42,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:42,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:42,532 INFO L124 PetriNetUnfolderBase]: 101/220 cut-off events. [2024-06-21 15:57:42,533 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-06-21 15:57:42,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 220 events. 101/220 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 819 event pairs, 21 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 754. Up to 165 conditions per place. [2024-06-21 15:57:42,534 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 38 selfloop transitions, 9 changer transitions 0/53 dead transitions. [2024-06-21 15:57:42,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 355 flow [2024-06-21 15:57:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:57:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:57:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-21 15:57:42,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-06-21 15:57:42,535 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 219 flow. Second operand 6 states and 109 transitions. [2024-06-21 15:57:42,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 355 flow [2024-06-21 15:57:42,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 320 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 15:57:42,537 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 221 flow [2024-06-21 15:57:42,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-06-21 15:57:42,538 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-21 15:57:42,538 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 221 flow [2024-06-21 15:57:42,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-06-21 15:57:42,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:42,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:42,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 15:57:42,539 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:42,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:42,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1822240320, now seen corresponding path program 2 times [2024-06-21 15:57:42,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:42,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414700337] [2024-06-21 15:57:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:42,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:42,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:42,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414700337] [2024-06-21 15:57:42,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414700337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:42,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:42,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:57:42,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577195310] [2024-06-21 15:57:42,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:42,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:57:42,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:42,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:57:42,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:57:42,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:42,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-06-21 15:57:42,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:42,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:42,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:42,652 INFO L124 PetriNetUnfolderBase]: 109/235 cut-off events. [2024-06-21 15:57:42,652 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-06-21 15:57:42,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 235 events. 109/235 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 915 event pairs, 23 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 823. Up to 136 conditions per place. [2024-06-21 15:57:42,653 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 32 selfloop transitions, 21 changer transitions 0/59 dead transitions. [2024-06-21 15:57:42,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 433 flow [2024-06-21 15:57:42,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:57:42,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:57:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-21 15:57:42,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-06-21 15:57:42,655 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 221 flow. Second operand 6 states and 116 transitions. [2024-06-21 15:57:42,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 433 flow [2024-06-21 15:57:42,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 412 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 15:57:42,657 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 295 flow [2024-06-21 15:57:42,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-21 15:57:42,658 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-21 15:57:42,658 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 295 flow [2024-06-21 15:57:42,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-06-21 15:57:42,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:42,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:42,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 15:57:42,659 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:42,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 421322210, now seen corresponding path program 3 times [2024-06-21 15:57:42,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:42,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162950122] [2024-06-21 15:57:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:42,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:42,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:42,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162950122] [2024-06-21 15:57:42,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162950122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:42,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:42,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:57:42,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149751882] [2024-06-21 15:57:42,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:42,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:57:42,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:42,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:57:42,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:57:42,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:42,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-06-21 15:57:42,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:42,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:42,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:42,787 INFO L124 PetriNetUnfolderBase]: 105/225 cut-off events. [2024-06-21 15:57:42,787 INFO L125 PetriNetUnfolderBase]: For 1039/1039 co-relation queries the response was YES. [2024-06-21 15:57:42,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 225 events. 105/225 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 880 event pairs, 27 based on Foata normal form. 2/224 useless extension candidates. Maximal degree in co-relation 839. Up to 133 conditions per place. [2024-06-21 15:57:42,789 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 31 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2024-06-21 15:57:42,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 431 flow [2024-06-21 15:57:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:57:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:57:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-21 15:57:42,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-21 15:57:42,790 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 295 flow. Second operand 6 states and 111 transitions. [2024-06-21 15:57:42,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 431 flow [2024-06-21 15:57:42,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 407 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-21 15:57:42,792 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 313 flow [2024-06-21 15:57:42,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-21 15:57:42,793 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-21 15:57:42,793 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 313 flow [2024-06-21 15:57:42,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-06-21 15:57:42,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:42,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:42,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 15:57:42,794 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:42,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:42,794 INFO L85 PathProgramCache]: Analyzing trace with hash 497620957, now seen corresponding path program 1 times [2024-06-21 15:57:42,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:42,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221615421] [2024-06-21 15:57:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:42,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:42,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:42,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221615421] [2024-06-21 15:57:42,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221615421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:42,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:42,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:57:42,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162795293] [2024-06-21 15:57:42,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:42,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:57:42,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:42,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:57:42,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:57:42,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:42,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-06-21 15:57:42,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:42,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:42,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:42,932 INFO L124 PetriNetUnfolderBase]: 108/234 cut-off events. [2024-06-21 15:57:42,932 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2024-06-21 15:57:42,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 234 events. 108/234 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 939 event pairs, 28 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 905. Up to 154 conditions per place. [2024-06-21 15:57:42,934 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 31 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2024-06-21 15:57:42,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 443 flow [2024-06-21 15:57:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 15:57:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 15:57:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-06-21 15:57:42,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-21 15:57:42,935 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 313 flow. Second operand 5 states and 95 transitions. [2024-06-21 15:57:42,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 443 flow [2024-06-21 15:57:42,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 395 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 15:57:42,938 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 334 flow [2024-06-21 15:57:42,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-21 15:57:42,938 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-21 15:57:42,938 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 334 flow [2024-06-21 15:57:42,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-06-21 15:57:42,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:42,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:42,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 15:57:42,939 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:42,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:42,939 INFO L85 PathProgramCache]: Analyzing trace with hash -153912191, now seen corresponding path program 2 times [2024-06-21 15:57:42,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:42,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225391888] [2024-06-21 15:57:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:42,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:43,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:43,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225391888] [2024-06-21 15:57:43,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225391888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:43,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:43,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:57:43,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387593685] [2024-06-21 15:57:43,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:43,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:57:43,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:43,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:57:43,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:57:43,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:43,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-06-21 15:57:43,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:43,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:43,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:43,085 INFO L124 PetriNetUnfolderBase]: 111/239 cut-off events. [2024-06-21 15:57:43,085 INFO L125 PetriNetUnfolderBase]: For 1373/1373 co-relation queries the response was YES. [2024-06-21 15:57:43,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 239 events. 111/239 cut-off events. For 1373/1373 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 964 event pairs, 28 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 935. Up to 141 conditions per place. [2024-06-21 15:57:43,087 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 28 selfloop transitions, 25 changer transitions 0/59 dead transitions. [2024-06-21 15:57:43,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 502 flow [2024-06-21 15:57:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:57:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:57:43,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-21 15:57:43,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-21 15:57:43,088 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 334 flow. Second operand 6 states and 111 transitions. [2024-06-21 15:57:43,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 502 flow [2024-06-21 15:57:43,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 461 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 15:57:43,091 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 370 flow [2024-06-21 15:57:43,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-21 15:57:43,092 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-21 15:57:43,092 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 370 flow [2024-06-21 15:57:43,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-06-21 15:57:43,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:43,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:43,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 15:57:43,093 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:43,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:43,093 INFO L85 PathProgramCache]: Analyzing trace with hash -153917771, now seen corresponding path program 3 times [2024-06-21 15:57:43,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:43,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276478663] [2024-06-21 15:57:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:43,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:43,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276478663] [2024-06-21 15:57:43,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276478663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:43,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:43,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:57:43,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554332428] [2024-06-21 15:57:43,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:43,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:57:43,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:57:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:57:43,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:43,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 370 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-06-21 15:57:43,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:43,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:43,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:43,215 INFO L124 PetriNetUnfolderBase]: 109/236 cut-off events. [2024-06-21 15:57:43,215 INFO L125 PetriNetUnfolderBase]: For 1361/1361 co-relation queries the response was YES. [2024-06-21 15:57:43,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 236 events. 109/236 cut-off events. For 1361/1361 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 948 event pairs, 28 based on Foata normal form. 1/234 useless extension candidates. Maximal degree in co-relation 924. Up to 139 conditions per place. [2024-06-21 15:57:43,217 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 30 selfloop transitions, 22 changer transitions 0/58 dead transitions. [2024-06-21 15:57:43,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 490 flow [2024-06-21 15:57:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:57:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:57:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-21 15:57:43,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-06-21 15:57:43,217 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 370 flow. Second operand 6 states and 109 transitions. [2024-06-21 15:57:43,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 490 flow [2024-06-21 15:57:43,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 410 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-21 15:57:43,223 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 340 flow [2024-06-21 15:57:43,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-21 15:57:43,223 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-21 15:57:43,223 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 340 flow [2024-06-21 15:57:43,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-06-21 15:57:43,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:43,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:43,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 15:57:43,224 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:43,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:43,224 INFO L85 PathProgramCache]: Analyzing trace with hash -348767463, now seen corresponding path program 1 times [2024-06-21 15:57:43,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:43,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288154075] [2024-06-21 15:57:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:43,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:43,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:43,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288154075] [2024-06-21 15:57:43,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288154075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:43,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:43,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:57:43,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508415484] [2024-06-21 15:57:43,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:43,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:57:43,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:43,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:57:43,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:57:43,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:43,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-06-21 15:57:43,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:43,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:43,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:43,363 INFO L124 PetriNetUnfolderBase]: 113/251 cut-off events. [2024-06-21 15:57:43,363 INFO L125 PetriNetUnfolderBase]: For 1478/1478 co-relation queries the response was YES. [2024-06-21 15:57:43,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 251 events. 113/251 cut-off events. For 1478/1478 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1034 event pairs, 26 based on Foata normal form. 2/251 useless extension candidates. Maximal degree in co-relation 947. Up to 173 conditions per place. [2024-06-21 15:57:43,365 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 41 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2024-06-21 15:57:43,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 472 flow [2024-06-21 15:57:43,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:57:43,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:57:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-21 15:57:43,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-21 15:57:43,366 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 340 flow. Second operand 6 states and 107 transitions. [2024-06-21 15:57:43,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 472 flow [2024-06-21 15:57:43,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 413 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 15:57:43,369 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 319 flow [2024-06-21 15:57:43,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-21 15:57:43,370 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-21 15:57:43,370 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 319 flow [2024-06-21 15:57:43,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-06-21 15:57:43,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:43,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:43,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 15:57:43,371 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:43,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:43,371 INFO L85 PathProgramCache]: Analyzing trace with hash -339244263, now seen corresponding path program 2 times [2024-06-21 15:57:43,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:43,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640701238] [2024-06-21 15:57:43,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:43,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:43,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:43,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640701238] [2024-06-21 15:57:43,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640701238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:43,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:43,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:57:43,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395194474] [2024-06-21 15:57:43,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:43,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:57:43,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:43,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:57:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:57:43,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:43,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-06-21 15:57:43,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:43,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:43,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:43,508 INFO L124 PetriNetUnfolderBase]: 110/246 cut-off events. [2024-06-21 15:57:43,508 INFO L125 PetriNetUnfolderBase]: For 1412/1412 co-relation queries the response was YES. [2024-06-21 15:57:43,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 246 events. 110/246 cut-off events. For 1412/1412 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1004 event pairs, 23 based on Foata normal form. 2/246 useless extension candidates. Maximal degree in co-relation 893. Up to 148 conditions per place. [2024-06-21 15:57:43,510 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 42 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-21 15:57:43,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 449 flow [2024-06-21 15:57:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:57:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:57:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-21 15:57:43,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-21 15:57:43,511 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 319 flow. Second operand 6 states and 105 transitions. [2024-06-21 15:57:43,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 449 flow [2024-06-21 15:57:43,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 421 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 15:57:43,514 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 321 flow [2024-06-21 15:57:43,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-06-21 15:57:43,515 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-21 15:57:43,515 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 321 flow [2024-06-21 15:57:43,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-06-21 15:57:43,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:43,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:43,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 15:57:43,516 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:43,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:43,516 INFO L85 PathProgramCache]: Analyzing trace with hash 103444663, now seen corresponding path program 1 times [2024-06-21 15:57:43,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:43,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647975735] [2024-06-21 15:57:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:43,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:43,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:43,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647975735] [2024-06-21 15:57:43,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647975735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:43,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:43,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:43,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792059669] [2024-06-21 15:57:43,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:43,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:43,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:43,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:43,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:43,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:43,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:57:43,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:43,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:43,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:43,711 INFO L124 PetriNetUnfolderBase]: 121/270 cut-off events. [2024-06-21 15:57:43,711 INFO L125 PetriNetUnfolderBase]: For 1870/1870 co-relation queries the response was YES. [2024-06-21 15:57:43,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 270 events. 121/270 cut-off events. For 1870/1870 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1124 event pairs, 9 based on Foata normal form. 2/271 useless extension candidates. Maximal degree in co-relation 1012. Up to 168 conditions per place. [2024-06-21 15:57:43,713 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 54 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-06-21 15:57:43,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 541 flow [2024-06-21 15:57:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:57:43,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:57:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-21 15:57:43,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-21 15:57:43,714 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 321 flow. Second operand 8 states and 140 transitions. [2024-06-21 15:57:43,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 541 flow [2024-06-21 15:57:43,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 511 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 15:57:43,719 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 337 flow [2024-06-21 15:57:43,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=337, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2024-06-21 15:57:43,720 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-21 15:57:43,720 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 337 flow [2024-06-21 15:57:43,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:57:43,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:43,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:43,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 15:57:43,721 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:43,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1730492869, now seen corresponding path program 2 times [2024-06-21 15:57:43,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:43,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875647690] [2024-06-21 15:57:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:43,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:43,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:43,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875647690] [2024-06-21 15:57:43,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875647690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:43,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:43,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:43,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312519365] [2024-06-21 15:57:43,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:43,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:43,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:43,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:43,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:43,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:43,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:57:43,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:43,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:43,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:43,893 INFO L124 PetriNetUnfolderBase]: 118/265 cut-off events. [2024-06-21 15:57:43,894 INFO L125 PetriNetUnfolderBase]: For 1793/1793 co-relation queries the response was YES. [2024-06-21 15:57:43,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 265 events. 118/265 cut-off events. For 1793/1793 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1107 event pairs, 19 based on Foata normal form. 2/266 useless extension candidates. Maximal degree in co-relation 976. Up to 192 conditions per place. [2024-06-21 15:57:43,895 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 53 selfloop transitions, 10 changer transitions 0/69 dead transitions. [2024-06-21 15:57:43,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 69 transitions, 499 flow [2024-06-21 15:57:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:57:43,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:57:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-21 15:57:43,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-06-21 15:57:43,897 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 337 flow. Second operand 7 states and 124 transitions. [2024-06-21 15:57:43,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 69 transitions, 499 flow [2024-06-21 15:57:43,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 473 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-21 15:57:43,901 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 335 flow [2024-06-21 15:57:43,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2024-06-21 15:57:43,902 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-21 15:57:43,902 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 335 flow [2024-06-21 15:57:43,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:57:43,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:43,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:43,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 15:57:43,903 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:43,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:43,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1199240759, now seen corresponding path program 3 times [2024-06-21 15:57:43,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:43,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551499370] [2024-06-21 15:57:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:43,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:43,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:43,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551499370] [2024-06-21 15:57:43,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551499370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:43,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:43,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:43,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757408199] [2024-06-21 15:57:43,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:43,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:43,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:43,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:43,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:43,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:43,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:57:43,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:43,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:43,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:44,048 INFO L124 PetriNetUnfolderBase]: 122/270 cut-off events. [2024-06-21 15:57:44,049 INFO L125 PetriNetUnfolderBase]: For 2056/2056 co-relation queries the response was YES. [2024-06-21 15:57:44,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1038 conditions, 270 events. 122/270 cut-off events. For 2056/2056 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1128 event pairs, 25 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 1006. Up to 160 conditions per place. [2024-06-21 15:57:44,050 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 26 changer transitions 0/67 dead transitions. [2024-06-21 15:57:44,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 67 transitions, 495 flow [2024-06-21 15:57:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:57:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:57:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-21 15:57:44,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-06-21 15:57:44,053 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 335 flow. Second operand 7 states and 129 transitions. [2024-06-21 15:57:44,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 67 transitions, 495 flow [2024-06-21 15:57:44,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 473 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-21 15:57:44,060 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 381 flow [2024-06-21 15:57:44,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-06-21 15:57:44,061 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-21 15:57:44,061 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 381 flow [2024-06-21 15:57:44,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:57:44,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:44,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:44,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 15:57:44,061 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:44,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2045948169, now seen corresponding path program 4 times [2024-06-21 15:57:44,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:44,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905627619] [2024-06-21 15:57:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:44,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:44,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:44,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905627619] [2024-06-21 15:57:44,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905627619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:44,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:44,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:44,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696713660] [2024-06-21 15:57:44,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:44,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:44,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:44,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:44,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 381 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:57:44,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:44,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:44,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:44,221 INFO L124 PetriNetUnfolderBase]: 131/290 cut-off events. [2024-06-21 15:57:44,221 INFO L125 PetriNetUnfolderBase]: For 3363/3363 co-relation queries the response was YES. [2024-06-21 15:57:44,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 290 events. 131/290 cut-off events. For 3363/3363 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1274 event pairs, 30 based on Foata normal form. 10/297 useless extension candidates. Maximal degree in co-relation 1067. Up to 151 conditions per place. [2024-06-21 15:57:44,223 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 22 changer transitions 4/67 dead transitions. [2024-06-21 15:57:44,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 67 transitions, 537 flow [2024-06-21 15:57:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:57:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:57:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-21 15:57:44,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-06-21 15:57:44,225 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 381 flow. Second operand 7 states and 128 transitions. [2024-06-21 15:57:44,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 67 transitions, 537 flow [2024-06-21 15:57:44,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 67 transitions, 479 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 15:57:44,229 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 366 flow [2024-06-21 15:57:44,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2024-06-21 15:57:44,230 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-21 15:57:44,230 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 366 flow [2024-06-21 15:57:44,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:57:44,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:44,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:44,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 15:57:44,231 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:44,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:44,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1253130722, now seen corresponding path program 1 times [2024-06-21 15:57:44,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:44,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140118345] [2024-06-21 15:57:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:44,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:44,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:44,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140118345] [2024-06-21 15:57:44,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140118345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:44,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:44,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:44,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136623168] [2024-06-21 15:57:44,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:44,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:44,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:44,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:44,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:44,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:44,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:44,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:44,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:44,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:44,407 INFO L124 PetriNetUnfolderBase]: 155/354 cut-off events. [2024-06-21 15:57:44,407 INFO L125 PetriNetUnfolderBase]: For 4344/4344 co-relation queries the response was YES. [2024-06-21 15:57:44,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 354 events. 155/354 cut-off events. For 4344/4344 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1692 event pairs, 33 based on Foata normal form. 6/357 useless extension candidates. Maximal degree in co-relation 1340. Up to 126 conditions per place. [2024-06-21 15:57:44,409 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 38 selfloop transitions, 15 changer transitions 12/71 dead transitions. [2024-06-21 15:57:44,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 580 flow [2024-06-21 15:57:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:57:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:57:44,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-21 15:57:44,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-06-21 15:57:44,410 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 366 flow. Second operand 7 states and 128 transitions. [2024-06-21 15:57:44,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 580 flow [2024-06-21 15:57:44,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 524 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 15:57:44,416 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 325 flow [2024-06-21 15:57:44,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2024-06-21 15:57:44,416 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-21 15:57:44,417 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 325 flow [2024-06-21 15:57:44,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:44,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:44,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:44,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 15:57:44,417 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:44,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:44,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1472237150, now seen corresponding path program 2 times [2024-06-21 15:57:44,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:44,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117187479] [2024-06-21 15:57:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:44,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:44,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:44,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117187479] [2024-06-21 15:57:44,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117187479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:44,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:44,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:44,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798283588] [2024-06-21 15:57:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:44,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:44,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:44,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:44,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:44,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:44,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:44,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:44,581 INFO L124 PetriNetUnfolderBase]: 139/316 cut-off events. [2024-06-21 15:57:44,581 INFO L125 PetriNetUnfolderBase]: For 4778/4778 co-relation queries the response was YES. [2024-06-21 15:57:44,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 316 events. 139/316 cut-off events. For 4778/4778 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1444 event pairs, 38 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 1216. Up to 126 conditions per place. [2024-06-21 15:57:44,583 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 37 selfloop transitions, 14 changer transitions 6/63 dead transitions. [2024-06-21 15:57:44,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 513 flow [2024-06-21 15:57:44,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:57:44,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:57:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-21 15:57:44,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-21 15:57:44,584 INFO L175 Difference]: Start difference. First operand has 75 places, 51 transitions, 325 flow. Second operand 6 states and 108 transitions. [2024-06-21 15:57:44,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 513 flow [2024-06-21 15:57:44,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 471 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-21 15:57:44,589 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 308 flow [2024-06-21 15:57:44,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2024-06-21 15:57:44,589 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-21 15:57:44,589 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 308 flow [2024-06-21 15:57:44,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:44,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:44,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:44,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 15:57:44,590 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:44,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:44,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1472385020, now seen corresponding path program 3 times [2024-06-21 15:57:44,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:44,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810213294] [2024-06-21 15:57:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:44,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:44,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:44,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:44,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810213294] [2024-06-21 15:57:44,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810213294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:44,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:44,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:44,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4994640] [2024-06-21 15:57:44,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:44,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:44,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:44,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:44,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:44,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:44,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:44,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:44,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:44,752 INFO L124 PetriNetUnfolderBase]: 115/268 cut-off events. [2024-06-21 15:57:44,752 INFO L125 PetriNetUnfolderBase]: For 2848/2848 co-relation queries the response was YES. [2024-06-21 15:57:44,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 268 events. 115/268 cut-off events. For 2848/2848 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1185 event pairs, 21 based on Foata normal form. 8/274 useless extension candidates. Maximal degree in co-relation 920. Up to 140 conditions per place. [2024-06-21 15:57:44,753 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 29 selfloop transitions, 14 changer transitions 8/57 dead transitions. [2024-06-21 15:57:44,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 57 transitions, 434 flow [2024-06-21 15:57:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:57:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:57:44,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-21 15:57:44,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-21 15:57:44,755 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 308 flow. Second operand 6 states and 107 transitions. [2024-06-21 15:57:44,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 57 transitions, 434 flow [2024-06-21 15:57:44,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 402 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 15:57:44,759 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 280 flow [2024-06-21 15:57:44,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2024-06-21 15:57:44,759 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-21 15:57:44,759 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 280 flow [2024-06-21 15:57:44,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:44,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:44,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:44,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 15:57:44,760 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:44,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:44,760 INFO L85 PathProgramCache]: Analyzing trace with hash 322375194, now seen corresponding path program 4 times [2024-06-21 15:57:44,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:44,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900034422] [2024-06-21 15:57:44,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:44,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:44,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:44,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900034422] [2024-06-21 15:57:44,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900034422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:44,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:44,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:44,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811757643] [2024-06-21 15:57:44,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:44,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:44,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:44,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:44,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:44,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:44,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 280 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:44,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:44,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:44,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:44,898 INFO L124 PetriNetUnfolderBase]: 105/239 cut-off events. [2024-06-21 15:57:44,898 INFO L125 PetriNetUnfolderBase]: For 2563/2567 co-relation queries the response was YES. [2024-06-21 15:57:44,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 239 events. 105/239 cut-off events. For 2563/2567 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 993 event pairs, 26 based on Foata normal form. 12/250 useless extension candidates. Maximal degree in co-relation 840. Up to 131 conditions per place. [2024-06-21 15:57:44,900 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 23 selfloop transitions, 15 changer transitions 9/53 dead transitions. [2024-06-21 15:57:44,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 53 transitions, 400 flow [2024-06-21 15:57:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:57:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:57:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-21 15:57:44,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-06-21 15:57:44,901 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 280 flow. Second operand 7 states and 121 transitions. [2024-06-21 15:57:44,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 53 transitions, 400 flow [2024-06-21 15:57:44,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 53 transitions, 349 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 15:57:44,904 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 247 flow [2024-06-21 15:57:44,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2024-06-21 15:57:44,904 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-21 15:57:44,905 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 247 flow [2024-06-21 15:57:44,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:44,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:44,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:44,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 15:57:44,905 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:44,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:44,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1794139662, now seen corresponding path program 1 times [2024-06-21 15:57:44,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:44,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806644750] [2024-06-21 15:57:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:44,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:44,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:44,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806644750] [2024-06-21 15:57:44,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806644750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:44,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:44,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:44,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480254800] [2024-06-21 15:57:44,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:44,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:44,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:44,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:44,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:44,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:44,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:44,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:44,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:44,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:45,035 INFO L124 PetriNetUnfolderBase]: 100/240 cut-off events. [2024-06-21 15:57:45,036 INFO L125 PetriNetUnfolderBase]: For 2255/2259 co-relation queries the response was YES. [2024-06-21 15:57:45,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 240 events. 100/240 cut-off events. For 2255/2259 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1001 event pairs, 30 based on Foata normal form. 12/251 useless extension candidates. Maximal degree in co-relation 774. Up to 127 conditions per place. [2024-06-21 15:57:45,037 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 9 changer transitions 10/50 dead transitions. [2024-06-21 15:57:45,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 50 transitions, 359 flow [2024-06-21 15:57:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:57:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:57:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-21 15:57:45,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-06-21 15:57:45,038 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 247 flow. Second operand 7 states and 118 transitions. [2024-06-21 15:57:45,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 50 transitions, 359 flow [2024-06-21 15:57:45,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 325 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 15:57:45,043 INFO L231 Difference]: Finished difference. Result has 62 places, 37 transitions, 211 flow [2024-06-21 15:57:45,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=211, PETRI_PLACES=62, PETRI_TRANSITIONS=37} [2024-06-21 15:57:45,044 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-21 15:57:45,044 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 37 transitions, 211 flow [2024-06-21 15:57:45,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:45,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:45,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:45,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 15:57:45,045 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:45,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:45,045 INFO L85 PathProgramCache]: Analyzing trace with hash 329999706, now seen corresponding path program 2 times [2024-06-21 15:57:45,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:45,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218790810] [2024-06-21 15:57:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:45,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:45,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:45,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218790810] [2024-06-21 15:57:45,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218790810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:45,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:45,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:45,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541835309] [2024-06-21 15:57:45,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:45,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:45,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:45,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:45,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:45,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:45,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 37 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:45,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:45,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:45,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:45,177 INFO L124 PetriNetUnfolderBase]: 89/225 cut-off events. [2024-06-21 15:57:45,178 INFO L125 PetriNetUnfolderBase]: For 1755/1755 co-relation queries the response was YES. [2024-06-21 15:57:45,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 225 events. 89/225 cut-off events. For 1755/1755 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 931 event pairs, 24 based on Foata normal form. 6/230 useless extension candidates. Maximal degree in co-relation 704. Up to 111 conditions per place. [2024-06-21 15:57:45,179 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 23 selfloop transitions, 10 changer transitions 7/46 dead transitions. [2024-06-21 15:57:45,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 46 transitions, 313 flow [2024-06-21 15:57:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:57:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:57:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-21 15:57:45,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-06-21 15:57:45,180 INFO L175 Difference]: Start difference. First operand has 62 places, 37 transitions, 211 flow. Second operand 7 states and 118 transitions. [2024-06-21 15:57:45,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 46 transitions, 313 flow [2024-06-21 15:57:45,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 46 transitions, 291 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 15:57:45,183 INFO L231 Difference]: Finished difference. Result has 60 places, 34 transitions, 195 flow [2024-06-21 15:57:45,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=60, PETRI_TRANSITIONS=34} [2024-06-21 15:57:45,183 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-21 15:57:45,183 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 34 transitions, 195 flow [2024-06-21 15:57:45,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:45,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:45,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:45,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 15:57:45,184 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:45,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:45,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1886222538, now seen corresponding path program 5 times [2024-06-21 15:57:45,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:45,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346971253] [2024-06-21 15:57:45,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:45,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:45,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:45,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346971253] [2024-06-21 15:57:45,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346971253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:45,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:45,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:45,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506514990] [2024-06-21 15:57:45,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:45,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:45,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:45,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:45,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:45,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 34 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:45,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:45,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:45,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:45,295 INFO L124 PetriNetUnfolderBase]: 73/191 cut-off events. [2024-06-21 15:57:45,295 INFO L125 PetriNetUnfolderBase]: For 1331/1331 co-relation queries the response was YES. [2024-06-21 15:57:45,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 191 events. 73/191 cut-off events. For 1331/1331 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 720 event pairs, 23 based on Foata normal form. 6/196 useless extension candidates. Maximal degree in co-relation 578. Up to 62 conditions per place. [2024-06-21 15:57:45,296 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 16 selfloop transitions, 4 changer transitions 18/44 dead transitions. [2024-06-21 15:57:45,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 44 transitions, 293 flow [2024-06-21 15:57:45,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:57:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:57:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-21 15:57:45,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-06-21 15:57:45,297 INFO L175 Difference]: Start difference. First operand has 60 places, 34 transitions, 195 flow. Second operand 7 states and 116 transitions. [2024-06-21 15:57:45,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 44 transitions, 293 flow [2024-06-21 15:57:45,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 44 transitions, 271 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-21 15:57:45,299 INFO L231 Difference]: Finished difference. Result has 60 places, 24 transitions, 125 flow [2024-06-21 15:57:45,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=125, PETRI_PLACES=60, PETRI_TRANSITIONS=24} [2024-06-21 15:57:45,299 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-21 15:57:45,299 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 24 transitions, 125 flow [2024-06-21 15:57:45,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:45,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:45,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:45,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 15:57:45,300 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:45,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:45,301 INFO L85 PathProgramCache]: Analyzing trace with hash -158069640, now seen corresponding path program 3 times [2024-06-21 15:57:45,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:45,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220463735] [2024-06-21 15:57:45,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:45,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:45,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:45,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220463735] [2024-06-21 15:57:45,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220463735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:45,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:45,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:45,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644870847] [2024-06-21 15:57:45,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:45,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:45,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:45,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:45,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:45,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:45,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 24 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:45,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:45,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:45,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:45,418 INFO L124 PetriNetUnfolderBase]: 42/115 cut-off events. [2024-06-21 15:57:45,418 INFO L125 PetriNetUnfolderBase]: For 1220/1220 co-relation queries the response was YES. [2024-06-21 15:57:45,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 115 events. 42/115 cut-off events. For 1220/1220 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 345 event pairs, 15 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 358. Up to 52 conditions per place. [2024-06-21 15:57:45,418 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 14 selfloop transitions, 3 changer transitions 10/33 dead transitions. [2024-06-21 15:57:45,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 33 transitions, 201 flow [2024-06-21 15:57:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:57:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:57:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-21 15:57:45,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-21 15:57:45,419 INFO L175 Difference]: Start difference. First operand has 60 places, 24 transitions, 125 flow. Second operand 7 states and 112 transitions. [2024-06-21 15:57:45,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 33 transitions, 201 flow [2024-06-21 15:57:45,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 33 transitions, 170 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-21 15:57:45,421 INFO L231 Difference]: Finished difference. Result has 46 places, 21 transitions, 88 flow [2024-06-21 15:57:45,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=46, PETRI_TRANSITIONS=21} [2024-06-21 15:57:45,422 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-21 15:57:45,422 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 21 transitions, 88 flow [2024-06-21 15:57:45,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:45,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:57:45,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:45,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 15:57:45,424 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:57:45,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:57:45,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1947190320, now seen corresponding path program 4 times [2024-06-21 15:57:45,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:57:45,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131256890] [2024-06-21 15:57:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:57:45,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:57:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:57:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:57:45,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:57:45,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131256890] [2024-06-21 15:57:45,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131256890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:57:45,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:57:45,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:57:45,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306219557] [2024-06-21 15:57:45,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:57:45,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:57:45,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:57:45,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:57:45,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:57:45,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-21 15:57:45,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 21 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:45,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:57:45,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-21 15:57:45,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:57:45,551 INFO L124 PetriNetUnfolderBase]: 20/63 cut-off events. [2024-06-21 15:57:45,551 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-06-21 15:57:45,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 63 events. 20/63 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 6/69 useless extension candidates. Maximal degree in co-relation 148. Up to 24 conditions per place. [2024-06-21 15:57:45,551 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-06-21 15:57:45,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 26 transitions, 120 flow [2024-06-21 15:57:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:57:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:57:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-21 15:57:45,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 15:57:45,552 INFO L175 Difference]: Start difference. First operand has 46 places, 21 transitions, 88 flow. Second operand 7 states and 105 transitions. [2024-06-21 15:57:45,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 26 transitions, 120 flow [2024-06-21 15:57:45,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 98 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-21 15:57:45,552 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2024-06-21 15:57:45,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2024-06-21 15:57:45,553 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2024-06-21 15:57:45,553 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2024-06-21 15:57:45,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2024-06-21 15:57:45,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 15:57:45,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 15:57:45,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 15:57:45,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 15:57:45,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 15:57:45,556 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-21 15:57:45,565 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 15:57:45,565 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 15:57:45,568 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 15:57:45,568 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 15:57:45,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 03:57:45 BasicIcfg [2024-06-21 15:57:45,569 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 15:57:45,570 INFO L158 Benchmark]: Toolchain (without parser) took 6060.94ms. Allocated memory was 142.6MB in the beginning and 245.4MB in the end (delta: 102.8MB). Free memory was 83.3MB in the beginning and 201.9MB in the end (delta: -118.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 15:57:45,570 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 104.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 15:57:45,570 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 101.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 15:57:45,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.87ms. Allocated memory is still 142.6MB. Free memory was 83.3MB in the beginning and 111.3MB in the end (delta: -28.0MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2024-06-21 15:57:45,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.12ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 109.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 15:57:45,571 INFO L158 Benchmark]: Boogie Preprocessor took 78.03ms. Allocated memory is still 142.6MB. Free memory was 109.4MB in the beginning and 107.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 15:57:45,571 INFO L158 Benchmark]: RCFGBuilder took 387.32ms. Allocated memory is still 142.6MB. Free memory was 107.2MB in the beginning and 87.5MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-21 15:57:45,571 INFO L158 Benchmark]: TraceAbstraction took 5043.91ms. Allocated memory was 142.6MB in the beginning and 245.4MB in the end (delta: 102.8MB). Free memory was 86.3MB in the beginning and 201.9MB in the end (delta: -115.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 15:57:45,572 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 104.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 101.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.87ms. Allocated memory is still 142.6MB. Free memory was 83.3MB in the beginning and 111.3MB in the end (delta: -28.0MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.12ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 109.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 78.03ms. Allocated memory is still 142.6MB. Free memory was 109.4MB in the beginning and 107.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 387.32ms. Allocated memory is still 142.6MB. Free memory was 107.2MB in the beginning and 87.5MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5043.91ms. Allocated memory was 142.6MB in the beginning and 245.4MB in the end (delta: 102.8MB). Free memory was 86.3MB in the beginning and 201.9MB in the end (delta: -115.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 763]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 764]: 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, 48 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: 4.9s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1075 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 763 mSDsluCounter, 326 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 233 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3142 IncrementalHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 93 mSDtfsCounter, 3142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=381occurred in iteration=19, InterpolantAutomatonStates: 175, 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, 2.0s InterpolantComputationTime, 415 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 2831 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 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! [2024-06-21 15:57:45,596 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