./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/read_write_lock-1.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i ./goblint.2024-05-21_14-57-05.files/protection/read_write_lock-1.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 18:36:12,003 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 18:36:12,070 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 18:36:12,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 18:36:12,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 18:36:12,099 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 18:36:12,100 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 18:36:12,100 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 18:36:12,101 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 18:36:12,104 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 18:36:12,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 18:36:12,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 18:36:12,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 18:36:12,107 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 18:36:12,107 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 18:36:12,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 18:36:12,107 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 18:36:12,107 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 18:36:12,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 18:36:12,108 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 18:36:12,108 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 18:36:12,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 18:36:12,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 18:36:12,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 18:36:12,109 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 18:36:12,109 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 18:36:12,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 18:36:12,110 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 18:36:12,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 18:36:12,111 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 18:36:12,111 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 18:36:12,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 18:36:12,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 18:36:12,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 18:36:12,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 18:36:12,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 18:36:12,112 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 18:36:12,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 18:36:12,113 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 18:36:12,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 18:36:12,113 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 18:36:12,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 18:36:12,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 18:36:12,114 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 18:36:12,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 18:36:12,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 18:36:12,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 18:36:12,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 18:36:12,365 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 18:36:12,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2024-06-03 18:36:13,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 18:36:13,652 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 18:36:13,652 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2024-06-03 18:36:13,668 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee339ad56/487fa144f798480a989cf1a2837ccc9e/FLAGeff403d88 [2024-06-03 18:36:13,678 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee339ad56/487fa144f798480a989cf1a2837ccc9e [2024-06-03 18:36:13,680 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 18:36:13,683 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 18:36:13,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/read_write_lock-1.yml/witness.yml [2024-06-03 18:36:13,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 18:36:13,784 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 18:36:13,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 18:36:13,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 18:36:13,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 18:36:13,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 06:36:13" (1/2) ... [2024-06-03 18:36:13,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502d7979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:36:13, skipping insertion in model container [2024-06-03 18:36:13,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 06:36:13" (1/2) ... [2024-06-03 18:36:13,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26652abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:36:13, skipping insertion in model container [2024-06-03 18:36:13,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:36:13" (2/2) ... [2024-06-03 18:36:13,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502d7979 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:13, skipping insertion in model container [2024-06-03 18:36:13,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:36:13" (2/2) ... [2024-06-03 18:36:13,805 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 18:36:13,837 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 18:36:13,839 INFO L97 edCorrectnessWitness]: Location invariant before [L746-L746] ((! multithreaded || ((0 <= w && w <= 1) && (w == 0 || w == 1))) && (! multithreaded || ((((0 <= x && x <= 3) && x <= 127) && x % 3 == 0) && (x == 0 || x == 3)))) && (! multithreaded || ((((0 <= y && y <= 3) && y <= 127) && y % 3 == 0) && (y == 0 || y == 3))) [2024-06-03 18:36:13,839 INFO L97 edCorrectnessWitness]: Location invariant before [L748-L748] ((! multithreaded || ((0 <= w && w <= 1) && (w == 0 || w == 1))) && (! multithreaded || ((((0 <= x && x <= 3) && x <= 127) && x % 3 == 0) && (x == 0 || x == 3)))) && (! multithreaded || ((((0 <= y && y <= 3) && y <= 127) && y % 3 == 0) && (y == 0 || y == 3))) [2024-06-03 18:36:13,839 INFO L97 edCorrectnessWitness]: Location invariant before [L749-L749] ((! multithreaded || ((0 <= w && w <= 1) && (w == 0 || w == 1))) && (! multithreaded || ((((0 <= x && x <= 3) && x <= 127) && x % 3 == 0) && (x == 0 || x == 3)))) && (! multithreaded || ((((0 <= y && y <= 3) && y <= 127) && y % 3 == 0) && (y == 0 || y == 3))) [2024-06-03 18:36:13,839 INFO L97 edCorrectnessWitness]: Location invariant before [L747-L747] ((! multithreaded || ((0 <= w && w <= 1) && (w == 0 || w == 1))) && (! multithreaded || ((((0 <= x && x <= 3) && x <= 127) && x % 3 == 0) && (x == 0 || x == 3)))) && (! multithreaded || ((((0 <= y && y <= 3) && y <= 127) && y % 3 == 0) && (y == 0 || y == 3))) [2024-06-03 18:36:13,839 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 18:36:13,840 INFO L106 edCorrectnessWitness]: ghost_update [L745-L745] multithreaded = 1; [2024-06-03 18:36:13,877 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 18:36:14,211 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 18:36:14,220 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 18:36:14,331 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 18:36:14,363 INFO L206 MainTranslator]: Completed translation [2024-06-03 18:36:14,364 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14 WrapperNode [2024-06-03 18:36:14,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 18:36:14,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 18:36:14,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 18:36:14,365 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 18:36:14,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,403 INFO L138 Inliner]: procedures = 173, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 98 [2024-06-03 18:36:14,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 18:36:14,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 18:36:14,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 18:36:14,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 18:36:14,416 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,420 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,439 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 18:36:14,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 18:36:14,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 18:36:14,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 18:36:14,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 18:36:14,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (1/1) ... [2024-06-03 18:36:14,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 18:36:14,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 18:36:14,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 18:36:14,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 18:36:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 18:36:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 18:36:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-06-03 18:36:14,514 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-06-03 18:36:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 18:36:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 18:36:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 18:36:14,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 18:36:14,515 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-06-03 18:36:14,515 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-06-03 18:36:14,516 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 18:36:14,646 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 18:36:14,647 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 18:36:14,898 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 18:36:14,898 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 18:36:14,981 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 18:36:14,981 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 18:36:14,982 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 06:36:14 BoogieIcfgContainer [2024-06-03 18:36:14,982 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 18:36:14,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 18:36:14,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 18:36:14,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 18:36:14,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 06:36:13" (1/4) ... [2024-06-03 18:36:14,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725480d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 06:36:14, skipping insertion in model container [2024-06-03 18:36:14,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:36:13" (2/4) ... [2024-06-03 18:36:14,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725480d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 06:36:14, skipping insertion in model container [2024-06-03 18:36:14,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:36:14" (3/4) ... [2024-06-03 18:36:14,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725480d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 06:36:14, skipping insertion in model container [2024-06-03 18:36:14,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 06:36:14" (4/4) ... [2024-06-03 18:36:14,991 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2024-06-03 18:36:15,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 18:36:15,007 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-03 18:36:15,007 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 18:36:15,073 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-03 18:36:15,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 56 transitions, 140 flow [2024-06-03 18:36:15,139 INFO L124 PetriNetUnfolderBase]: 0/52 cut-off events. [2024-06-03 18:36:15,139 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-03 18:36:15,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 52 events. 0/52 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-03 18:36:15,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 56 transitions, 140 flow [2024-06-03 18:36:15,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 46 transitions, 104 flow [2024-06-03 18:36:15,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 18:36:15,161 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;@17c7a6d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 18:36:15,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-03 18:36:15,165 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 18:36:15,166 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 18:36:15,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 18:36:15,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:15,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 18:36:15,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:15,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:15,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1248141548, now seen corresponding path program 1 times [2024-06-03 18:36:15,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:15,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486401043] [2024-06-03 18:36:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:15,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486401043] [2024-06-03 18:36:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486401043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:15,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:15,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 18:36:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280215081] [2024-06-03 18:36:15,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:15,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 18:36:15,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:15,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 18:36:15,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 18:36:15,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-06-03 18:36:15,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:15,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:15,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-06-03 18:36:15,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:16,765 INFO L124 PetriNetUnfolderBase]: 7973/11888 cut-off events. [2024-06-03 18:36:16,765 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-06-03 18:36:16,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23072 conditions, 11888 events. 7973/11888 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 72068 event pairs, 4535 based on Foata normal form. 9/11682 useless extension candidates. Maximal degree in co-relation 23056. Up to 10819 conditions per place. [2024-06-03 18:36:16,841 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 49 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-06-03 18:36:16,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 257 flow [2024-06-03 18:36:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 18:36:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 18:36:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-03 18:36:16,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6130952380952381 [2024-06-03 18:36:16,854 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 104 flow. Second operand 3 states and 103 transitions. [2024-06-03 18:36:16,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 257 flow [2024-06-03 18:36:16,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 250 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-03 18:36:16,859 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 139 flow [2024-06-03 18:36:16,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-03 18:36:16,862 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2024-06-03 18:36:16,863 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 139 flow [2024-06-03 18:36:16,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:16,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:16,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:16,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 18:36:16,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:16,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1168112653, now seen corresponding path program 1 times [2024-06-03 18:36:16,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:16,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080937718] [2024-06-03 18:36:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:16,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:17,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:17,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080937718] [2024-06-03 18:36:17,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080937718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:17,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:17,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 18:36:17,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467048347] [2024-06-03 18:36:17,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:17,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 18:36:17,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:17,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 18:36:17,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 18:36:17,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 56 [2024-06-03 18:36:17,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:17,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:17,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 56 [2024-06-03 18:36:17,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:18,308 INFO L124 PetriNetUnfolderBase]: 12553/18107 cut-off events. [2024-06-03 18:36:18,308 INFO L125 PetriNetUnfolderBase]: For 2961/2961 co-relation queries the response was YES. [2024-06-03 18:36:18,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39815 conditions, 18107 events. 12553/18107 cut-off events. For 2961/2961 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 106899 event pairs, 6762 based on Foata normal form. 115/18139 useless extension candidates. Maximal degree in co-relation 39800. Up to 16792 conditions per place. [2024-06-03 18:36:18,418 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 63 selfloop transitions, 9 changer transitions 0/80 dead transitions. [2024-06-03 18:36:18,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 359 flow [2024-06-03 18:36:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 18:36:18,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 18:36:18,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-06-03 18:36:18,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-03 18:36:18,423 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 139 flow. Second operand 4 states and 132 transitions. [2024-06-03 18:36:18,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 359 flow [2024-06-03 18:36:18,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 18:36:18,427 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 194 flow [2024-06-03 18:36:18,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-06-03 18:36:18,427 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-06-03 18:36:18,428 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 194 flow [2024-06-03 18:36:18,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:18,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:18,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:18,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 18:36:18,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:18,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:18,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1851752583, now seen corresponding path program 1 times [2024-06-03 18:36:18,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:18,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88609277] [2024-06-03 18:36:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:18,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:18,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:18,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88609277] [2024-06-03 18:36:18,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88609277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:18,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:18,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 18:36:18,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415797214] [2024-06-03 18:36:18,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:18,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 18:36:18,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:18,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 18:36:18,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 18:36:18,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 56 [2024-06-03 18:36:18,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:18,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:18,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 56 [2024-06-03 18:36:18,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:19,840 INFO L124 PetriNetUnfolderBase]: 11740/17119 cut-off events. [2024-06-03 18:36:19,841 INFO L125 PetriNetUnfolderBase]: For 9244/9244 co-relation queries the response was YES. [2024-06-03 18:36:19,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43911 conditions, 17119 events. 11740/17119 cut-off events. For 9244/9244 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 101916 event pairs, 4126 based on Foata normal form. 339/17316 useless extension candidates. Maximal degree in co-relation 43894. Up to 13739 conditions per place. [2024-06-03 18:36:20,057 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 83 selfloop transitions, 21 changer transitions 0/112 dead transitions. [2024-06-03 18:36:20,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 112 transitions, 594 flow [2024-06-03 18:36:20,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:36:20,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:36:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-06-03 18:36:20,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6107142857142858 [2024-06-03 18:36:20,059 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 194 flow. Second operand 5 states and 171 transitions. [2024-06-03 18:36:20,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 112 transitions, 594 flow [2024-06-03 18:36:20,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 578 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-03 18:36:20,069 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 347 flow [2024-06-03 18:36:20,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-06-03 18:36:20,069 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 7 predicate places. [2024-06-03 18:36:20,070 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 347 flow [2024-06-03 18:36:20,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:20,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:20,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:20,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 18:36:20,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:20,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:20,071 INFO L85 PathProgramCache]: Analyzing trace with hash -738555242, now seen corresponding path program 1 times [2024-06-03 18:36:20,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:20,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044064382] [2024-06-03 18:36:20,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:20,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:20,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:20,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044064382] [2024-06-03 18:36:20,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044064382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:20,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:20,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 18:36:20,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873394855] [2024-06-03 18:36:20,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:20,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 18:36:20,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:20,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 18:36:20,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 18:36:20,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 56 [2024-06-03 18:36:20,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 347 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:20,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:20,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 56 [2024-06-03 18:36:20,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:21,493 INFO L124 PetriNetUnfolderBase]: 11526/16756 cut-off events. [2024-06-03 18:36:21,493 INFO L125 PetriNetUnfolderBase]: For 27031/27037 co-relation queries the response was YES. [2024-06-03 18:36:21,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53617 conditions, 16756 events. 11526/16756 cut-off events. For 27031/27037 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 99604 event pairs, 3905 based on Foata normal form. 110/16706 useless extension candidates. Maximal degree in co-relation 53597. Up to 13709 conditions per place. [2024-06-03 18:36:21,630 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 83 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-06-03 18:36:21,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 677 flow [2024-06-03 18:36:21,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:36:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:36:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-06-03 18:36:21,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-03 18:36:21,633 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 347 flow. Second operand 5 states and 165 transitions. [2024-06-03 18:36:21,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 677 flow [2024-06-03 18:36:21,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 108 transitions, 669 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-03 18:36:21,646 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 377 flow [2024-06-03 18:36:21,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-06-03 18:36:21,647 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2024-06-03 18:36:21,648 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 377 flow [2024-06-03 18:36:21,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:21,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:21,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:21,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 18:36:21,649 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:21,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1400516435, now seen corresponding path program 1 times [2024-06-03 18:36:21,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:21,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647630536] [2024-06-03 18:36:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:21,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:21,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:21,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647630536] [2024-06-03 18:36:21,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647630536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:21,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:21,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 18:36:21,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170153320] [2024-06-03 18:36:21,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:21,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 18:36:21,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:21,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 18:36:21,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-03 18:36:21,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 56 [2024-06-03 18:36:21,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 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) [2024-06-03 18:36:21,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:21,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 56 [2024-06-03 18:36:21,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:23,179 INFO L124 PetriNetUnfolderBase]: 11921/17779 cut-off events. [2024-06-03 18:36:23,180 INFO L125 PetriNetUnfolderBase]: For 37613/37627 co-relation queries the response was YES. [2024-06-03 18:36:23,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58890 conditions, 17779 events. 11921/17779 cut-off events. For 37613/37627 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 112235 event pairs, 4615 based on Foata normal form. 50/17426 useless extension candidates. Maximal degree in co-relation 58867. Up to 15428 conditions per place. [2024-06-03 18:36:23,431 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 94 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2024-06-03 18:36:23,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 122 transitions, 846 flow [2024-06-03 18:36:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:36:23,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:36:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-03 18:36:23,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386904761904762 [2024-06-03 18:36:23,433 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 377 flow. Second operand 6 states and 181 transitions. [2024-06-03 18:36:23,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 122 transitions, 846 flow [2024-06-03 18:36:23,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 122 transitions, 804 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-03 18:36:23,456 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 508 flow [2024-06-03 18:36:23,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=508, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-06-03 18:36:23,457 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2024-06-03 18:36:23,457 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 508 flow [2024-06-03 18:36:23,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 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) [2024-06-03 18:36:23,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:23,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:23,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 18:36:23,458 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:23,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:23,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1586814578, now seen corresponding path program 1 times [2024-06-03 18:36:23,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:23,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977249618] [2024-06-03 18:36:23,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:23,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:23,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977249618] [2024-06-03 18:36:23,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977249618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:23,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:23,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 18:36:23,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842475233] [2024-06-03 18:36:23,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:23,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 18:36:23,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:23,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 18:36:23,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 18:36:23,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2024-06-03 18:36:23,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:23,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:23,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2024-06-03 18:36:23,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:24,316 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([186] L749-->ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT: Formula: (let ((.cse0 (not (= |v_#ghost~multithreaded_9| 0)))) (or (and .cse0 (or (< v_~w~0_9 0) (< 1 v_~w~0_9) (and (not (= v_~w~0_9 0)) (not (= v_~w~0_9 1))))) (and .cse0 (let ((.cse1 (< v_~y~0_10 0))) (or .cse1 (and (not (= v_~y~0_10 3)) (not (= v_~y~0_10 0))) (not (= (let ((.cse2 (mod v_~y~0_10 3))) (ite (and (not (= .cse2 0)) .cse1) (+ .cse2 (- 3)) .cse2)) 0)) (< 127 v_~y~0_10) (< 3 v_~y~0_10)))) (and .cse0 (let ((.cse4 (< v_~x~0_10 0))) (or (< 127 v_~x~0_10) (not (= (let ((.cse3 (mod v_~x~0_10 3))) (ite (and (not (= .cse3 0)) .cse4) (+ .cse3 (- 3)) .cse3)) 0)) (and (not (= v_~x~0_10 3)) (not (= v_~x~0_10 0))) (< 3 v_~x~0_10) .cse4))))) InVars {~w~0=v_~w~0_9, #ghost~multithreaded=|v_#ghost~multithreaded_9|, ~y~0=v_~y~0_10, ~x~0=v_~x~0_10} OutVars{~w~0=v_~w~0_9, #ghost~multithreaded=|v_#ghost~multithreaded_9|, ~y~0=v_~y~0_10, ~x~0=v_~x~0_10} AuxVars[] AssignedVars[][70], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 61#L721true, 49#L740true, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), 28#L721true, Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 46#L732true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,316 INFO L294 olderBase$Statistics]: this new event has 35 ancestors and is not cut-off event [2024-06-03 18:36:24,316 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is not cut-off event [2024-06-03 18:36:24,316 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is not cut-off event [2024-06-03 18:36:24,316 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is not cut-off event [2024-06-03 18:36:24,322 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([246] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, writerThread1of1ForFork1_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork1_assume_abort_if_not_~cond#1, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1][90], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 36#L717-1true, Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 49#L740true, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), 28#L721true, Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 19#L740true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,322 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,322 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,322 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,323 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,347 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][93], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 61#L721true, 49#L740true, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 21#L717-1true, 19#L740true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,347 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,347 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,348 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,348 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,358 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([186] L749-->ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT: Formula: (let ((.cse0 (not (= |v_#ghost~multithreaded_9| 0)))) (or (and .cse0 (or (< v_~w~0_9 0) (< 1 v_~w~0_9) (and (not (= v_~w~0_9 0)) (not (= v_~w~0_9 1))))) (and .cse0 (let ((.cse1 (< v_~y~0_10 0))) (or .cse1 (and (not (= v_~y~0_10 3)) (not (= v_~y~0_10 0))) (not (= (let ((.cse2 (mod v_~y~0_10 3))) (ite (and (not (= .cse2 0)) .cse1) (+ .cse2 (- 3)) .cse2)) 0)) (< 127 v_~y~0_10) (< 3 v_~y~0_10)))) (and .cse0 (let ((.cse4 (< v_~x~0_10 0))) (or (< 127 v_~x~0_10) (not (= (let ((.cse3 (mod v_~x~0_10 3))) (ite (and (not (= .cse3 0)) .cse4) (+ .cse3 (- 3)) .cse3)) 0)) (and (not (= v_~x~0_10 3)) (not (= v_~x~0_10 0))) (< 3 v_~x~0_10) .cse4))))) InVars {~w~0=v_~w~0_9, #ghost~multithreaded=|v_#ghost~multithreaded_9|, ~y~0=v_~y~0_10, ~x~0=v_~x~0_10} OutVars{~w~0=v_~w~0_9, #ghost~multithreaded=|v_#ghost~multithreaded_9|, ~y~0=v_~y~0_10, ~x~0=v_~x~0_10} AuxVars[] AssignedVars[][70], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 15#readerEXITtrue, 61#L721true, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), 28#L721true, Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 46#L732true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,359 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is not cut-off event [2024-06-03 18:36:24,359 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is not cut-off event [2024-06-03 18:36:24,359 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is not cut-off event [2024-06-03 18:36:24,359 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is not cut-off event [2024-06-03 18:36:24,360 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([246] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, writerThread1of1ForFork1_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork1_assume_abort_if_not_~cond#1, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1][90], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), writerThread1of1ForFork1InUse, Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 36#L717-1true, Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), Black: 83#(= ~y~0 0), 49#L740true, Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), 28#L721true, Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 19#L740true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,360 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,360 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,360 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,360 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,360 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,365 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([246] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, writerThread1of1ForFork1_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork1_assume_abort_if_not_~cond#1, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1][90], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 36#L717-1true, Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 15#readerEXITtrue, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), 28#L721true, Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 19#L740true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,365 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,365 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,365 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,365 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,365 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([246] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, writerThread1of1ForFork1_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork1_assume_abort_if_not_~cond#1, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1][90], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 36#L717-1true, Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 27#readerEXITtrue, Black: 83#(= ~y~0 0), 49#L740true, Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), 28#L721true, Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,365 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,365 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,365 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,365 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,369 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][93], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 61#L721true, 49#L740true, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 21#L717-1true, 19#L740true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,369 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,369 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,369 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,369 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,370 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-03 18:36:24,380 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][93], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), writerThread1of1ForFork1InUse, Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 15#readerEXITtrue, 61#L721true, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 21#L717-1true, 19#L740true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,380 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,380 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,380 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,381 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,381 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][93], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 27#readerEXITtrue, 61#L721true, 49#L740true, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 21#L717-1true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,381 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,381 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,381 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,381 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,391 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([246] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, writerThread1of1ForFork1_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork1_assume_abort_if_not_~cond#1, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1][90], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), writerThread1of1ForFork1InUse, Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 36#L717-1true, Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 15#readerEXITtrue, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), 28#L721true, Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 19#L740true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,391 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,391 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,391 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,391 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,391 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,392 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([246] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, writerThread1of1ForFork1_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork1_assume_abort_if_not_~cond#1, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1][90], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), writerThread1of1ForFork1InUse, Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 36#L717-1true, Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 27#readerEXITtrue, 106#(= ~r~0 0), Black: 83#(= ~y~0 0), 49#L740true, Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), 28#L721true, Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,392 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,392 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,392 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,392 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,393 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,396 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([246] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, writerThread1of1ForFork1_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork1_assume_abort_if_not_~cond#1, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1][90], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 36#L717-1true, Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 27#readerEXITtrue, 15#readerEXITtrue, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), 28#L721true, Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,396 INFO L294 olderBase$Statistics]: this new event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,396 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,396 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,396 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,399 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][93], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 15#readerEXITtrue, 61#L721true, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 21#L717-1true, 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 19#L740true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,399 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,399 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,399 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,399 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,399 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,401 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][93], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 27#readerEXITtrue, 61#L721true, 49#L740true, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, 21#L717-1true, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,401 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,401 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,401 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,401 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,401 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-03 18:36:24,407 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][93], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), writerThread1of1ForFork1InUse, Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 106#(= ~r~0 0), 27#readerEXITtrue, 15#readerEXITtrue, 61#L721true, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 21#L717-1true, 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,408 INFO L294 olderBase$Statistics]: this new event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,408 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,408 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,408 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,417 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([246] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, writerThread1of1ForFork1_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork1_assume_abort_if_not_~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork1_assume_abort_if_not_~cond#1, writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1][90], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), writerThread1of1ForFork1InUse, Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 36#L717-1true, Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 27#readerEXITtrue, 106#(= ~r~0 0), 15#readerEXITtrue, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), 28#L721true, Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,417 INFO L294 olderBase$Statistics]: this new event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,417 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,418 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,418 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,418 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,423 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (not (= (ite (and (= v_~r~0_55 0) (= v_~w~0_73 0)) 1 0) 0)) (= v_~w~0_72 1)) InVars {~w~0=v_~w~0_73, ~r~0=v_~r~0_55} OutVars{~w~0=v_~w~0_72, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_55} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][93], [readerThread1of1ForFork3InUse, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, writerThread1of1ForFork1InUse, Black: 101#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 98#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), Black: 74#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 95#true, 81#true, Black: 79#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), 27#readerEXITtrue, 106#(= ~r~0 0), 15#readerEXITtrue, 61#L721true, Black: 83#(= ~y~0 0), Black: 85#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0)), 21#L717-1true, 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 93#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0))]) [2024-06-03 18:36:24,423 INFO L294 olderBase$Statistics]: this new event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,423 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,423 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,423 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,423 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2024-06-03 18:36:24,450 INFO L124 PetriNetUnfolderBase]: 7308/12759 cut-off events. [2024-06-03 18:36:24,450 INFO L125 PetriNetUnfolderBase]: For 46221/48021 co-relation queries the response was YES. [2024-06-03 18:36:24,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42008 conditions, 12759 events. 7308/12759 cut-off events. For 46221/48021 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 101157 event pairs, 2644 based on Foata normal form. 733/12618 useless extension candidates. Maximal degree in co-relation 41984. Up to 4738 conditions per place. [2024-06-03 18:36:24,546 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 63 selfloop transitions, 15 changer transitions 0/110 dead transitions. [2024-06-03 18:36:24,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 726 flow [2024-06-03 18:36:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 18:36:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 18:36:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-06-03 18:36:24,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7232142857142857 [2024-06-03 18:36:24,547 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 508 flow. Second operand 4 states and 162 transitions. [2024-06-03 18:36:24,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 726 flow [2024-06-03 18:36:24,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 110 transitions, 710 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-03 18:36:24,570 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 554 flow [2024-06-03 18:36:24,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=554, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2024-06-03 18:36:24,573 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 20 predicate places. [2024-06-03 18:36:24,574 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 554 flow [2024-06-03 18:36:24,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:24,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:24,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:24,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 18:36:24,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:24,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1046716557, now seen corresponding path program 1 times [2024-06-03 18:36:24,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:24,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903933594] [2024-06-03 18:36:24,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:24,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:24,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903933594] [2024-06-03 18:36:24,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903933594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:24,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:24,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:36:24,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074508932] [2024-06-03 18:36:24,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:24,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:36:24,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:24,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:36:24,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:36:24,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 56 [2024-06-03 18:36:24,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 554 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:24,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:24,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 56 [2024-06-03 18:36:24,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:26,761 INFO L124 PetriNetUnfolderBase]: 17838/27042 cut-off events. [2024-06-03 18:36:26,762 INFO L125 PetriNetUnfolderBase]: For 85198/85202 co-relation queries the response was YES. [2024-06-03 18:36:26,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93266 conditions, 27042 events. 17838/27042 cut-off events. For 85198/85202 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 185397 event pairs, 2134 based on Foata normal form. 468/27415 useless extension candidates. Maximal degree in co-relation 93237. Up to 10641 conditions per place. [2024-06-03 18:36:26,912 INFO L140 encePairwiseOnDemand]: 42/56 looper letters, 176 selfloop transitions, 28 changer transitions 0/211 dead transitions. [2024-06-03 18:36:26,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 211 transitions, 1776 flow [2024-06-03 18:36:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:36:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:36:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-06-03 18:36:26,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755952380952381 [2024-06-03 18:36:26,914 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 554 flow. Second operand 6 states and 227 transitions. [2024-06-03 18:36:26,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 211 transitions, 1776 flow [2024-06-03 18:36:26,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 211 transitions, 1752 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-06-03 18:36:26,998 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 1006 flow [2024-06-03 18:36:26,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1006, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2024-06-03 18:36:26,999 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 30 predicate places. [2024-06-03 18:36:26,999 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 1006 flow [2024-06-03 18:36:27,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:27,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:27,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:27,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 18:36:27,000 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:27,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:27,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2024990247, now seen corresponding path program 1 times [2024-06-03 18:36:27,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:27,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521429593] [2024-06-03 18:36:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:27,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:27,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521429593] [2024-06-03 18:36:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521429593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:27,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:36:27,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32820424] [2024-06-03 18:36:27,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:36:27,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:36:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:36:27,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 56 [2024-06-03 18:36:27,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 1006 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:27,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:27,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 56 [2024-06-03 18:36:27,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:29,418 INFO L124 PetriNetUnfolderBase]: 16474/25524 cut-off events. [2024-06-03 18:36:29,418 INFO L125 PetriNetUnfolderBase]: For 115195/115557 co-relation queries the response was YES. [2024-06-03 18:36:29,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100110 conditions, 25524 events. 16474/25524 cut-off events. For 115195/115557 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 177909 event pairs, 7137 based on Foata normal form. 194/25481 useless extension candidates. Maximal degree in co-relation 100076. Up to 22101 conditions per place. [2024-06-03 18:36:29,608 INFO L140 encePairwiseOnDemand]: 44/56 looper letters, 120 selfloop transitions, 13 changer transitions 0/144 dead transitions. [2024-06-03 18:36:29,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 144 transitions, 1464 flow [2024-06-03 18:36:29,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:36:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:36:29,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-03 18:36:29,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-03 18:36:29,610 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 1006 flow. Second operand 6 states and 168 transitions. [2024-06-03 18:36:29,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 144 transitions, 1464 flow [2024-06-03 18:36:29,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 144 transitions, 1414 flow, removed 25 selfloop flow, removed 0 redundant places. [2024-06-03 18:36:29,793 INFO L231 Difference]: Finished difference. Result has 95 places, 105 transitions, 1016 flow [2024-06-03 18:36:29,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1016, PETRI_PLACES=95, PETRI_TRANSITIONS=105} [2024-06-03 18:36:29,793 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 36 predicate places. [2024-06-03 18:36:29,794 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 105 transitions, 1016 flow [2024-06-03 18:36:29,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:29,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:29,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:29,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 18:36:29,794 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:29,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:29,795 INFO L85 PathProgramCache]: Analyzing trace with hash -7795348, now seen corresponding path program 1 times [2024-06-03 18:36:29,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:29,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050045389] [2024-06-03 18:36:29,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:29,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:30,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:30,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050045389] [2024-06-03 18:36:30,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050045389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:30,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:30,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:36:30,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56915558] [2024-06-03 18:36:30,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:30,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:36:30,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:36:30,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:36:30,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 56 [2024-06-03 18:36:30,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 105 transitions, 1016 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:30,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:30,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 56 [2024-06-03 18:36:30,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:32,483 INFO L124 PetriNetUnfolderBase]: 17434/26932 cut-off events. [2024-06-03 18:36:32,483 INFO L125 PetriNetUnfolderBase]: For 116184/116188 co-relation queries the response was YES. [2024-06-03 18:36:32,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104265 conditions, 26932 events. 17434/26932 cut-off events. For 116184/116188 co-relation queries the response was YES. Maximal size of possible extension queue 1069. Compared 187269 event pairs, 6596 based on Foata normal form. 206/26969 useless extension candidates. Maximal degree in co-relation 104227. Up to 22808 conditions per place. [2024-06-03 18:36:32,684 INFO L140 encePairwiseOnDemand]: 44/56 looper letters, 166 selfloop transitions, 28 changer transitions 0/201 dead transitions. [2024-06-03 18:36:32,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 201 transitions, 1938 flow [2024-06-03 18:36:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:36:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:36:32,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 236 transitions. [2024-06-03 18:36:32,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-06-03 18:36:32,686 INFO L175 Difference]: Start difference. First operand has 95 places, 105 transitions, 1016 flow. Second operand 8 states and 236 transitions. [2024-06-03 18:36:32,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 201 transitions, 1938 flow [2024-06-03 18:36:32,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 201 transitions, 1922 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 18:36:32,799 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 1280 flow [2024-06-03 18:36:32,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1280, PETRI_PLACES=103, PETRI_TRANSITIONS=118} [2024-06-03 18:36:32,800 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 44 predicate places. [2024-06-03 18:36:32,800 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 1280 flow [2024-06-03 18:36:32,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:32,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:32,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:32,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 18:36:32,800 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:32,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash 746510900, now seen corresponding path program 1 times [2024-06-03 18:36:32,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:32,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544185969] [2024-06-03 18:36:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:32,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:32,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:32,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544185969] [2024-06-03 18:36:32,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544185969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:32,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:32,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:36:32,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651905007] [2024-06-03 18:36:32,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:32,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:36:32,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:36:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:36:33,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 56 [2024-06-03 18:36:33,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 118 transitions, 1280 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:33,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:33,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 56 [2024-06-03 18:36:33,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:35,149 INFO L124 PetriNetUnfolderBase]: 14943/23771 cut-off events. [2024-06-03 18:36:35,149 INFO L125 PetriNetUnfolderBase]: For 127331/127797 co-relation queries the response was YES. [2024-06-03 18:36:35,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96721 conditions, 23771 events. 14943/23771 cut-off events. For 127331/127797 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 173868 event pairs, 6389 based on Foata normal form. 184/23557 useless extension candidates. Maximal degree in co-relation 96679. Up to 20256 conditions per place. [2024-06-03 18:36:35,391 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 134 selfloop transitions, 18 changer transitions 0/171 dead transitions. [2024-06-03 18:36:35,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 171 transitions, 1825 flow [2024-06-03 18:36:35,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:36:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:36:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-03 18:36:35,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4872448979591837 [2024-06-03 18:36:35,392 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 1280 flow. Second operand 7 states and 191 transitions. [2024-06-03 18:36:35,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 171 transitions, 1825 flow [2024-06-03 18:36:35,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 171 transitions, 1747 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-03 18:36:35,782 INFO L231 Difference]: Finished difference. Result has 107 places, 123 transitions, 1299 flow [2024-06-03 18:36:35,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1299, PETRI_PLACES=107, PETRI_TRANSITIONS=123} [2024-06-03 18:36:35,783 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 48 predicate places. [2024-06-03 18:36:35,783 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 123 transitions, 1299 flow [2024-06-03 18:36:35,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:35,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:35,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:35,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 18:36:35,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:35,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:35,784 INFO L85 PathProgramCache]: Analyzing trace with hash 596080460, now seen corresponding path program 1 times [2024-06-03 18:36:35,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:35,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951866387] [2024-06-03 18:36:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:35,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:35,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:35,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951866387] [2024-06-03 18:36:35,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951866387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:35,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:35,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:36:35,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79945070] [2024-06-03 18:36:35,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:35,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:36:35,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:35,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:36:35,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:36:35,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 56 [2024-06-03 18:36:35,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 123 transitions, 1299 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:35,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:35,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 56 [2024-06-03 18:36:35,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:39,583 INFO L124 PetriNetUnfolderBase]: 24611/37649 cut-off events. [2024-06-03 18:36:39,583 INFO L125 PetriNetUnfolderBase]: For 205860/205970 co-relation queries the response was YES. [2024-06-03 18:36:39,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149647 conditions, 37649 events. 24611/37649 cut-off events. For 205860/205970 co-relation queries the response was YES. Maximal size of possible extension queue 1663. Compared 274774 event pairs, 5701 based on Foata normal form. 416/37863 useless extension candidates. Maximal degree in co-relation 149603. Up to 17463 conditions per place. [2024-06-03 18:36:39,982 INFO L140 encePairwiseOnDemand]: 42/56 looper letters, 279 selfloop transitions, 58 changer transitions 0/346 dead transitions. [2024-06-03 18:36:39,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 346 transitions, 3249 flow [2024-06-03 18:36:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-03 18:36:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-03 18:36:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 449 transitions. [2024-06-03 18:36:39,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345238095238095 [2024-06-03 18:36:39,984 INFO L175 Difference]: Start difference. First operand has 107 places, 123 transitions, 1299 flow. Second operand 15 states and 449 transitions. [2024-06-03 18:36:39,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 346 transitions, 3249 flow [2024-06-03 18:36:40,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 346 transitions, 3225 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-03 18:36:40,612 INFO L231 Difference]: Finished difference. Result has 124 places, 141 transitions, 1717 flow [2024-06-03 18:36:40,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1717, PETRI_PLACES=124, PETRI_TRANSITIONS=141} [2024-06-03 18:36:40,613 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 65 predicate places. [2024-06-03 18:36:40,613 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 141 transitions, 1717 flow [2024-06-03 18:36:40,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:40,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:40,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:40,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 18:36:40,613 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:40,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1298626639, now seen corresponding path program 1 times [2024-06-03 18:36:40,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:40,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712109643] [2024-06-03 18:36:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:40,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:40,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:40,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712109643] [2024-06-03 18:36:40,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712109643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:40,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:40,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:36:40,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803762779] [2024-06-03 18:36:40,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:40,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:36:40,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:40,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:36:40,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:36:40,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 56 [2024-06-03 18:36:40,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 141 transitions, 1717 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:40,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:40,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 56 [2024-06-03 18:36:40,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:44,920 INFO L124 PetriNetUnfolderBase]: 27349/42063 cut-off events. [2024-06-03 18:36:44,920 INFO L125 PetriNetUnfolderBase]: For 296750/296866 co-relation queries the response was YES. [2024-06-03 18:36:45,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179553 conditions, 42063 events. 27349/42063 cut-off events. For 296750/296866 co-relation queries the response was YES. Maximal size of possible extension queue 1947. Compared 315639 event pairs, 5822 based on Foata normal form. 460/42319 useless extension candidates. Maximal degree in co-relation 179504. Up to 17463 conditions per place. [2024-06-03 18:36:45,592 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 270 selfloop transitions, 48 changer transitions 0/327 dead transitions. [2024-06-03 18:36:45,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 327 transitions, 3617 flow [2024-06-03 18:36:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 18:36:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 18:36:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 367 transitions. [2024-06-03 18:36:45,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461309523809523 [2024-06-03 18:36:45,594 INFO L175 Difference]: Start difference. First operand has 124 places, 141 transitions, 1717 flow. Second operand 12 states and 367 transitions. [2024-06-03 18:36:45,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 327 transitions, 3617 flow [2024-06-03 18:36:46,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 327 transitions, 3476 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-03 18:36:46,497 INFO L231 Difference]: Finished difference. Result has 128 places, 154 transitions, 1922 flow [2024-06-03 18:36:46,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1922, PETRI_PLACES=128, PETRI_TRANSITIONS=154} [2024-06-03 18:36:46,498 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 69 predicate places. [2024-06-03 18:36:46,498 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 154 transitions, 1922 flow [2024-06-03 18:36:46,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:46,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:46,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:46,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 18:36:46,499 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:46,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash -257690284, now seen corresponding path program 1 times [2024-06-03 18:36:46,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:46,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914580860] [2024-06-03 18:36:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:46,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:46,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914580860] [2024-06-03 18:36:46,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914580860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:46,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:46,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:36:46,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884776996] [2024-06-03 18:36:46,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:46,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:36:46,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:46,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:36:46,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:36:46,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 56 [2024-06-03 18:36:46,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 154 transitions, 1922 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:46,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:46,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 56 [2024-06-03 18:36:46,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:50,968 INFO L124 PetriNetUnfolderBase]: 27162/40922 cut-off events. [2024-06-03 18:36:50,969 INFO L125 PetriNetUnfolderBase]: For 343296/343548 co-relation queries the response was YES. [2024-06-03 18:36:51,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184508 conditions, 40922 events. 27162/40922 cut-off events. For 343296/343548 co-relation queries the response was YES. Maximal size of possible extension queue 1911. Compared 299716 event pairs, 3926 based on Foata normal form. 566/41110 useless extension candidates. Maximal degree in co-relation 184455. Up to 19890 conditions per place. [2024-06-03 18:36:51,332 INFO L140 encePairwiseOnDemand]: 44/56 looper letters, 183 selfloop transitions, 58 changer transitions 6/258 dead transitions. [2024-06-03 18:36:51,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 258 transitions, 3171 flow [2024-06-03 18:36:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:36:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:36:51,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2024-06-03 18:36:51,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6220238095238095 [2024-06-03 18:36:51,333 INFO L175 Difference]: Start difference. First operand has 128 places, 154 transitions, 1922 flow. Second operand 6 states and 209 transitions. [2024-06-03 18:36:51,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 258 transitions, 3171 flow [2024-06-03 18:36:52,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 258 transitions, 3071 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-03 18:36:52,279 INFO L231 Difference]: Finished difference. Result has 128 places, 160 transitions, 2144 flow [2024-06-03 18:36:52,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2144, PETRI_PLACES=128, PETRI_TRANSITIONS=160} [2024-06-03 18:36:52,280 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 69 predicate places. [2024-06-03 18:36:52,280 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 160 transitions, 2144 flow [2024-06-03 18:36:52,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:52,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:52,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:52,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 18:36:52,281 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:52,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:52,281 INFO L85 PathProgramCache]: Analyzing trace with hash 471427273, now seen corresponding path program 1 times [2024-06-03 18:36:52,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:52,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515015658] [2024-06-03 18:36:52,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:52,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:52,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:52,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515015658] [2024-06-03 18:36:52,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515015658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:52,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:52,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:36:52,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846094040] [2024-06-03 18:36:52,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:52,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:36:52,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:52,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:36:52,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:36:52,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 56 [2024-06-03 18:36:52,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 160 transitions, 2144 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:52,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:52,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 56 [2024-06-03 18:36:52,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:36:56,132 INFO L124 PetriNetUnfolderBase]: 22356/34046 cut-off events. [2024-06-03 18:36:56,132 INFO L125 PetriNetUnfolderBase]: For 323114/323400 co-relation queries the response was YES. [2024-06-03 18:36:56,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161115 conditions, 34046 events. 22356/34046 cut-off events. For 323114/323400 co-relation queries the response was YES. Maximal size of possible extension queue 1538. Compared 245520 event pairs, 9058 based on Foata normal form. 302/34036 useless extension candidates. Maximal degree in co-relation 161060. Up to 30762 conditions per place. [2024-06-03 18:36:56,481 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 192 selfloop transitions, 35 changer transitions 0/238 dead transitions. [2024-06-03 18:36:56,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 238 transitions, 2976 flow [2024-06-03 18:36:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:36:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:36:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-03 18:36:56,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-03 18:36:56,483 INFO L175 Difference]: Start difference. First operand has 128 places, 160 transitions, 2144 flow. Second operand 9 states and 238 transitions. [2024-06-03 18:36:56,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 238 transitions, 2976 flow [2024-06-03 18:36:58,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 238 transitions, 2816 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-03 18:36:58,014 INFO L231 Difference]: Finished difference. Result has 132 places, 165 transitions, 2156 flow [2024-06-03 18:36:58,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2156, PETRI_PLACES=132, PETRI_TRANSITIONS=165} [2024-06-03 18:36:58,014 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 73 predicate places. [2024-06-03 18:36:58,015 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 165 transitions, 2156 flow [2024-06-03 18:36:58,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:58,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:36:58,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:36:58,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 18:36:58,015 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 18:36:58,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:36:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash 526866637, now seen corresponding path program 1 times [2024-06-03 18:36:58,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:36:58,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013315350] [2024-06-03 18:36:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:36:58,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:36:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:36:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:36:58,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:36:58,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013315350] [2024-06-03 18:36:58,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013315350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:36:58,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:36:58,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:36:58,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366923110] [2024-06-03 18:36:58,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:36:58,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:36:58,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:36:58,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:36:58,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:36:58,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 56 [2024-06-03 18:36:58,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 165 transitions, 2156 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:36:58,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:36:58,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 56 [2024-06-03 18:36:58,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand