./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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-pthread.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:21:37,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:21:37,993 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:21:38,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:21:38,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:21:38,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:21:38,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:21:38,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:21:38,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:21:38,051 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:21:38,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:21:38,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:21:38,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:21:38,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:21:38,054 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:21:38,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:21:38,054 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:21:38,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:21:38,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:21:38,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:21:38,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:21:38,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:21:38,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:21:38,056 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:21:38,056 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:21:38,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:21:38,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:21:38,057 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:21:38,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:21:38,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:21:38,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:21:38,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:21:38,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:21:38,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:21:38,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:21:38,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:21:38,061 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:21:38,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:21:38,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:21:38,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:21:38,061 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:21:38,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:21:38,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:21:38,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:21:38,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:21:38,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:21:38,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:21:38,328 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:21:38,329 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:21:38,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-02-07 14:21:39,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:21:39,887 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:21:39,888 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-02-07 14:21:39,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab46021c/3724e030a2c54aa98e1aee3a4af3c795/FLAG38db91ecf [2024-02-07 14:21:39,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab46021c/3724e030a2c54aa98e1aee3a4af3c795 [2024-02-07 14:21:39,911 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:21:39,919 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:21:39,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.yml/witness.yml [2024-02-07 14:21:40,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:21:40,039 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:21:40,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:21:40,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:21:40,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:21:40,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:21:39" (1/2) ... [2024-02-07 14:21:40,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74fde464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:40, skipping insertion in model container [2024-02-07 14:21:40,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:21:39" (1/2) ... [2024-02-07 14:21:40,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7fa0110c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:40, skipping insertion in model container [2024-02-07 14:21:40,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:21:40" (2/2) ... [2024-02-07 14:21:40,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74fde464 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40, skipping insertion in model container [2024-02-07 14:21:40,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:21:40" (2/2) ... [2024-02-07 14:21:40,052 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:21:40,124 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:21:40,126 INFO L76 edCorrectnessWitness]: Location invariant before [L706-L706] ((((0 <= ly) && (ly <= 3)) && (ly <= 127)) && (ly % 3 == 0)) && (ly == 0 || ly == 3) [2024-02-07 14:21:40,126 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] (((((((((0 <= ly) && (0 <= lx)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (ly % 3 == 0)) && (lx % 3 == 0)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-02-07 14:21:40,127 INFO L76 edCorrectnessWitness]: Location invariant before [L709-L709] ((((0 <= lx) && (lx <= 3)) && (lx <= 127)) && (lx % 3 == 0)) && (lx == 0 || lx == 3) [2024-02-07 14:21:40,127 INFO L76 edCorrectnessWitness]: Location invariant after [L710-L710] (((((((((0 <= ly) && (0 <= lx)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (ly % 3 == 0)) && (lx % 3 == 0)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-02-07 14:21:40,127 INFO L76 edCorrectnessWitness]: Location invariant before [L699-L699] ((((0 <= x) && (x <= 3)) && (x <= 127)) && (x % 3 == 0)) && (x == 0 || x == 3) [2024-02-07 14:21:40,128 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] ((((0 <= l) && (l <= 3)) && (l <= 127)) && (l % 3 == 0)) && (l == 0 || l == 3) [2024-02-07 14:21:40,128 INFO L76 edCorrectnessWitness]: Location invariant after [L705-L705] ((((0 <= y) && (y <= 3)) && (y <= 127)) && (y % 3 == 0)) && (y == 0 || y == 3) [2024-02-07 14:21:40,128 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] ((((0 <= x) && (x <= 3)) && (x <= 127)) && (x % 3 == 0)) && (x == 0 || x == 3) [2024-02-07 14:21:40,128 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((((0 <= y) && (y <= 3)) && (y <= 127)) && (y % 3 == 0)) && (y == 0 || y == 3) [2024-02-07 14:21:40,128 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] ((((0 <= y) && (y <= 3)) && (y <= 127)) && (y % 3 == 0)) && (y == 0 || y == 3) [2024-02-07 14:21:40,128 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] (((((((((0 <= ly) && (0 <= lx)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (ly % 3 == 0)) && (lx % 3 == 0)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-02-07 14:21:40,128 INFO L76 edCorrectnessWitness]: Location invariant after [L708-L708] ((((0 <= x) && (x <= 3)) && (x <= 127)) && (x % 3 == 0)) && (x == 0 || x == 3) [2024-02-07 14:21:40,129 INFO L76 edCorrectnessWitness]: Location invariant before [L700-L700] ((((0 <= l) && (l <= 3)) && (l <= 127)) && (l % 3 == 0)) && (l == 0 || l == 3) [2024-02-07 14:21:40,129 INFO L76 edCorrectnessWitness]: Location invariant before [L692-L692] x == 3 [2024-02-07 14:21:40,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:21:40,463 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i[30919,30932] [2024-02-07 14:21:40,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:21:40,484 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:21:40,592 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:21:40,592 WARN L423 MainDispatcher]: Unable to annotate ly = y with a witness entry Start Parsing Local [2024-02-07 14:21:40,601 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:21:40,602 WARN L423 MainDispatcher]: Unable to annotate lx = x with a witness entry Start Parsing Local Start Parsing Local [2024-02-07 14:21:40,614 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i[30919,30932] Start Parsing Local [2024-02-07 14:21:40,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:21:40,689 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:21:40,690 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40 WrapperNode [2024-02-07 14:21:40,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:21:40,690 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:21:40,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:21:40,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:21:40,695 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 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,721 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 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,743 INFO L138 Inliner]: procedures = 166, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2024-02-07 14:21:40,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:21:40,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:21:40,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:21:40,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:21:40,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,804 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 2, 11, 2, 2, 2]. 52 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 11, 0, 0, 0]. The 4 writes are split as follows [0, 1, 0, 1, 1, 1]. [2024-02-07 14:21:40,804 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,805 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:21:40,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:21:40,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:21:40,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:21:40,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40" (1/1) ... [2024-02-07 14:21:40,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:21:40,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:21:40,894 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) [2024-02-07 14:21:40,906 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 [2024-02-07 14:21:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2024-02-07 14:21:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:21:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:21:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:21:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:21:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:21:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:21:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:21:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:21:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:21:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:21:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:21:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:21:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2024-02-07 14:21:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:21:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:21:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-02-07 14:21:40,939 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-02-07 14:21:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:21:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2024-02-07 14:21:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:21:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:21:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:21:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:21:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:21:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:21:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:21:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:21:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:21:40,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:21:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-02-07 14:21:40,941 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-02-07 14:21:40,942 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:21:41,060 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:21:41,062 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:21:41,316 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:21:41,316 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:21:41,427 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:21:41,428 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:21:41,428 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:21:41 BoogieIcfgContainer [2024-02-07 14:21:41,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:21:41,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:21:41,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:21:41,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:21:41,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:21:39" (1/4) ... [2024-02-07 14:21:41,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbcb890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:21:41, skipping insertion in model container [2024-02-07 14:21:41,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:21:40" (2/4) ... [2024-02-07 14:21:41,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbcb890 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:21:41, skipping insertion in model container [2024-02-07 14:21:41,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:40" (3/4) ... [2024-02-07 14:21:41,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbcb890 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:21:41, skipping insertion in model container [2024-02-07 14:21:41,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:21:41" (4/4) ... [2024-02-07 14:21:41,434 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2024-02-07 14:21:41,447 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:21:41,447 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-02-07 14:21:41,447 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:21:41,519 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-07 14:21:41,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 190 flow [2024-02-07 14:21:41,595 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2024-02-07 14:21:41,595 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 14:21:41,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 77 events. 2/77 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 230 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2024-02-07 14:21:41,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 81 transitions, 190 flow [2024-02-07 14:21:41,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 75 transitions, 171 flow [2024-02-07 14:21:41,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:21:41,619 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;@25035b56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:21:41,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-02-07 14:21:41,627 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:21:41,627 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 14:21:41,627 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:21:41,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:41,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:21:41,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writerErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:21:41,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:41,634 INFO L85 PathProgramCache]: Analyzing trace with hash -371089221, now seen corresponding path program 1 times [2024-02-07 14:21:41,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:41,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540730858] [2024-02-07 14:21:41,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:41,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:41,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540730858] [2024-02-07 14:21:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540730858] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:41,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:41,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:41,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398440569] [2024-02-07 14:21:41,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:41,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:41,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:41,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:41,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 81 [2024-02-07 14:21:41,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:41,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:41,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 81 [2024-02-07 14:21:41,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:46,141 INFO L124 PetriNetUnfolderBase]: 40977/57639 cut-off events. [2024-02-07 14:21:46,141 INFO L125 PetriNetUnfolderBase]: For 2983/2983 co-relation queries the response was YES. [2024-02-07 14:21:46,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116316 conditions, 57639 events. 40977/57639 cut-off events. For 2983/2983 co-relation queries the response was YES. Maximal size of possible extension queue 1849. Compared 396383 event pairs, 9273 based on Foata normal form. 1738/53607 useless extension candidates. Maximal degree in co-relation 100619. Up to 51498 conditions per place. [2024-02-07 14:21:46,426 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 78 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2024-02-07 14:21:46,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 98 transitions, 386 flow [2024-02-07 14:21:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-02-07 14:21:46,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6748971193415638 [2024-02-07 14:21:46,436 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 171 flow. Second operand 3 states and 164 transitions. [2024-02-07 14:21:46,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 98 transitions, 386 flow [2024-02-07 14:21:46,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 368 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-07 14:21:46,604 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 166 flow [2024-02-07 14:21:46,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-02-07 14:21:46,608 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -9 predicate places. [2024-02-07 14:21:46,608 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 166 flow [2024-02-07 14:21:46,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:46,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:46,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:46,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:21:46,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:21:46,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1938899544, now seen corresponding path program 1 times [2024-02-07 14:21:46,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:46,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276423537] [2024-02-07 14:21:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:46,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:46,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:46,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276423537] [2024-02-07 14:21:46,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276423537] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:46,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:46,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:21:46,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885269093] [2024-02-07 14:21:46,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:46,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:46,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:46,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:46,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:46,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 81 [2024-02-07 14:21:46,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:46,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:46,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 81 [2024-02-07 14:21:46,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:49,456 INFO L124 PetriNetUnfolderBase]: 32385/44641 cut-off events. [2024-02-07 14:21:49,457 INFO L125 PetriNetUnfolderBase]: For 5822/5888 co-relation queries the response was YES. [2024-02-07 14:21:49,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93686 conditions, 44641 events. 32385/44641 cut-off events. For 5822/5888 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 284086 event pairs, 6701 based on Foata normal form. 416/40517 useless extension candidates. Maximal degree in co-relation 43656. Up to 40059 conditions per place. [2024-02-07 14:21:49,644 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 73 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-02-07 14:21:49,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 364 flow [2024-02-07 14:21:49,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-02-07 14:21:49,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6255144032921811 [2024-02-07 14:21:49,650 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 166 flow. Second operand 3 states and 152 transitions. [2024-02-07 14:21:49,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 364 flow [2024-02-07 14:21:49,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:21:49,655 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 154 flow [2024-02-07 14:21:49,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-02-07 14:21:49,655 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2024-02-07 14:21:49,656 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 154 flow [2024-02-07 14:21:49,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:49,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:49,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:49,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:21:49,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:21:49,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:49,657 INFO L85 PathProgramCache]: Analyzing trace with hash -23655944, now seen corresponding path program 1 times [2024-02-07 14:21:49,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:49,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132920473] [2024-02-07 14:21:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:49,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:49,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:49,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132920473] [2024-02-07 14:21:49,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132920473] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:49,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:49,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:49,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097878955] [2024-02-07 14:21:49,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:49,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:49,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:49,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:49,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 81 [2024-02-07 14:21:49,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-02-07 14:21:49,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:49,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 81 [2024-02-07 14:21:49,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:51,925 INFO L124 PetriNetUnfolderBase]: 20507/34156 cut-off events. [2024-02-07 14:21:51,925 INFO L125 PetriNetUnfolderBase]: For 5143/5143 co-relation queries the response was YES. [2024-02-07 14:21:51,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67195 conditions, 34156 events. 20507/34156 cut-off events. For 5143/5143 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 283935 event pairs, 5376 based on Foata normal form. 0/29554 useless extension candidates. Maximal degree in co-relation 41259. Up to 20087 conditions per place. [2024-02-07 14:21:52,052 INFO L140 encePairwiseOnDemand]: 79/81 looper letters, 70 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2024-02-07 14:21:52,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 366 flow [2024-02-07 14:21:52,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-02-07 14:21:52,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6008230452674898 [2024-02-07 14:21:52,054 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 154 flow. Second operand 3 states and 146 transitions. [2024-02-07 14:21:52,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 366 flow [2024-02-07 14:21:52,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 91 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:21:52,057 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 149 flow [2024-02-07 14:21:52,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2024-02-07 14:21:52,058 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2024-02-07 14:21:52,058 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 149 flow [2024-02-07 14:21:52,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-02-07 14:21:52,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:52,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:52,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:21:52,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:21:52,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:52,059 INFO L85 PathProgramCache]: Analyzing trace with hash -733333925, now seen corresponding path program 1 times [2024-02-07 14:21:52,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:52,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014532802] [2024-02-07 14:21:52,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:52,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:52,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:52,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014532802] [2024-02-07 14:21:52,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014532802] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:52,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:52,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:21:52,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726453911] [2024-02-07 14:21:52,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:52,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:21:52,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:52,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:21:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:21:52,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 81 [2024-02-07 14:21:52,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-02-07 14:21:52,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:52,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 81 [2024-02-07 14:21:52,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:57,339 INFO L124 PetriNetUnfolderBase]: 52583/84985 cut-off events. [2024-02-07 14:21:57,339 INFO L125 PetriNetUnfolderBase]: For 7165/7165 co-relation queries the response was YES. [2024-02-07 14:21:57,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165094 conditions, 84985 events. 52583/84985 cut-off events. For 7165/7165 co-relation queries the response was YES. Maximal size of possible extension queue 2926. Compared 745085 event pairs, 6431 based on Foata normal form. 0/74865 useless extension candidates. Maximal degree in co-relation 99861. Up to 29061 conditions per place. [2024-02-07 14:21:57,725 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 186 selfloop transitions, 18 changer transitions 0/222 dead transitions. [2024-02-07 14:21:57,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 222 transitions, 929 flow [2024-02-07 14:21:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:21:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:21:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 424 transitions. [2024-02-07 14:21:57,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5816186556927297 [2024-02-07 14:21:57,727 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 149 flow. Second operand 9 states and 424 transitions. [2024-02-07 14:21:57,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 222 transitions, 929 flow [2024-02-07 14:21:57,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 222 transitions, 925 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:21:57,733 INFO L231 Difference]: Finished difference. Result has 87 places, 79 transitions, 285 flow [2024-02-07 14:21:57,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=87, PETRI_TRANSITIONS=79} [2024-02-07 14:21:57,734 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2024-02-07 14:21:57,735 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 285 flow [2024-02-07 14:21:57,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-02-07 14:21:57,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:57,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:57,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:21:57,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:21:57,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:57,737 INFO L85 PathProgramCache]: Analyzing trace with hash -359255459, now seen corresponding path program 1 times [2024-02-07 14:21:57,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:57,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172860456] [2024-02-07 14:21:57,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:57,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:57,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172860456] [2024-02-07 14:21:57,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172860456] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:21:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619447555] [2024-02-07 14:21:57,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:57,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:21:57,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:57,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:21:57,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:21:57,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 81 [2024-02-07 14:21:57,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:57,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:57,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 81 [2024-02-07 14:21:57,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:03,010 INFO L124 PetriNetUnfolderBase]: 50585/76336 cut-off events. [2024-02-07 14:22:03,010 INFO L125 PetriNetUnfolderBase]: For 29139/29139 co-relation queries the response was YES. [2024-02-07 14:22:03,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169548 conditions, 76336 events. 50585/76336 cut-off events. For 29139/29139 co-relation queries the response was YES. Maximal size of possible extension queue 2655. Compared 618236 event pairs, 14737 based on Foata normal form. 0/74801 useless extension candidates. Maximal degree in co-relation 108065. Up to 40136 conditions per place. [2024-02-07 14:22:03,460 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 122 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-02-07 14:22:03,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 139 transitions, 753 flow [2024-02-07 14:22:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:22:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:22:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2024-02-07 14:22:03,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558641975308642 [2024-02-07 14:22:03,463 INFO L175 Difference]: Start difference. First operand has 87 places, 79 transitions, 285 flow. Second operand 4 states and 181 transitions. [2024-02-07 14:22:03,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 139 transitions, 753 flow [2024-02-07 14:22:03,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 139 transitions, 736 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:22:03,517 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 276 flow [2024-02-07 14:22:03,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2024-02-07 14:22:03,520 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2024-02-07 14:22:03,520 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 276 flow [2024-02-07 14:22:03,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:22:03,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:03,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:03,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:22:03,521 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:22:03,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:03,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1300034102, now seen corresponding path program 1 times [2024-02-07 14:22:03,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:03,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860260721] [2024-02-07 14:22:03,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:03,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:03,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860260721] [2024-02-07 14:22:03,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860260721] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:03,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:03,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:22:03,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37785007] [2024-02-07 14:22:03,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:03,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:22:03,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:03,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:22:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:22:03,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 81 [2024-02-07 14:22:03,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-02-07 14:22:03,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:03,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 81 [2024-02-07 14:22:03,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:04,067 INFO L124 PetriNetUnfolderBase]: 2786/5838 cut-off events. [2024-02-07 14:22:04,068 INFO L125 PetriNetUnfolderBase]: For 2429/2429 co-relation queries the response was YES. [2024-02-07 14:22:04,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14873 conditions, 5838 events. 2786/5838 cut-off events. For 2429/2429 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 45488 event pairs, 436 based on Foata normal form. 2722/8251 useless extension candidates. Maximal degree in co-relation 11515. Up to 3864 conditions per place. [2024-02-07 14:22:04,098 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 68 selfloop transitions, 2 changer transitions 2/90 dead transitions. [2024-02-07 14:22:04,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 483 flow [2024-02-07 14:22:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:22:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:22:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-02-07 14:22:04,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-02-07 14:22:04,100 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 276 flow. Second operand 3 states and 140 transitions. [2024-02-07 14:22:04,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 483 flow [2024-02-07 14:22:04,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 477 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:22:04,112 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 256 flow [2024-02-07 14:22:04,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-02-07 14:22:04,113 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -8 predicate places. [2024-02-07 14:22:04,113 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 256 flow [2024-02-07 14:22:04,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-02-07 14:22:04,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:04,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:04,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:22:04,114 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:22:04,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:04,115 INFO L85 PathProgramCache]: Analyzing trace with hash 143850596, now seen corresponding path program 2 times [2024-02-07 14:22:04,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:04,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160088075] [2024-02-07 14:22:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:04,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:04,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:04,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160088075] [2024-02-07 14:22:04,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160088075] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:04,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:04,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:22:04,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261251439] [2024-02-07 14:22:04,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:04,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:22:04,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:04,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:22:04,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:22:04,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 81 [2024-02-07 14:22:04,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-02-07 14:22:04,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:04,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 81 [2024-02-07 14:22:04,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:04,411 INFO L124 PetriNetUnfolderBase]: 296/778 cut-off events. [2024-02-07 14:22:04,412 INFO L125 PetriNetUnfolderBase]: For 1277/1283 co-relation queries the response was YES. [2024-02-07 14:22:04,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 778 events. 296/778 cut-off events. For 1277/1283 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4408 event pairs, 67 based on Foata normal form. 374/1094 useless extension candidates. Maximal degree in co-relation 1595. Up to 517 conditions per place. [2024-02-07 14:22:04,414 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 34 selfloop transitions, 2 changer transitions 8/60 dead transitions. [2024-02-07 14:22:04,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 60 transitions, 279 flow [2024-02-07 14:22:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:22:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:22:04,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-02-07 14:22:04,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49794238683127573 [2024-02-07 14:22:04,415 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 256 flow. Second operand 3 states and 121 transitions. [2024-02-07 14:22:04,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 60 transitions, 279 flow [2024-02-07 14:22:04,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 259 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-07 14:22:04,418 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 139 flow [2024-02-07 14:22:04,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2024-02-07 14:22:04,419 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2024-02-07 14:22:04,420 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 139 flow [2024-02-07 14:22:04,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-02-07 14:22:04,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:04,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:04,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:22:04,422 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:22:04,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:04,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1220748427, now seen corresponding path program 1 times [2024-02-07 14:22:04,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:04,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131956440] [2024-02-07 14:22:04,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:04,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:04,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:04,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131956440] [2024-02-07 14:22:04,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131956440] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:04,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:04,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:22:04,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540504761] [2024-02-07 14:22:04,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:04,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:22:04,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:22:04,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:22:04,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 81 [2024-02-07 14:22:04,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-02-07 14:22:04,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:04,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 81 [2024-02-07 14:22:04,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:04,581 INFO L124 PetriNetUnfolderBase]: 189/563 cut-off events. [2024-02-07 14:22:04,581 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-02-07 14:22:04,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 563 events. 189/563 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3131 event pairs, 84 based on Foata normal form. 14/518 useless extension candidates. Maximal degree in co-relation 1166. Up to 223 conditions per place. [2024-02-07 14:22:04,583 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 33 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-02-07 14:22:04,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 232 flow [2024-02-07 14:22:04,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:22:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:22:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-02-07 14:22:04,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39197530864197533 [2024-02-07 14:22:04,584 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 139 flow. Second operand 4 states and 127 transitions. [2024-02-07 14:22:04,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 232 flow [2024-02-07 14:22:04,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 51 transitions, 222 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-02-07 14:22:04,585 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 133 flow [2024-02-07 14:22:04,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-02-07 14:22:04,586 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -27 predicate places. [2024-02-07 14:22:04,586 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 133 flow [2024-02-07 14:22:04,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-02-07 14:22:04,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:04,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:04,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:22:04,586 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:22:04,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:04,587 INFO L85 PathProgramCache]: Analyzing trace with hash -811504065, now seen corresponding path program 1 times [2024-02-07 14:22:04,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:04,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290099872] [2024-02-07 14:22:04,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:04,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:04,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:04,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290099872] [2024-02-07 14:22:04,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290099872] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:04,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:04,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:22:04,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832848994] [2024-02-07 14:22:04,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:04,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:22:04,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:04,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:22:04,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:22:04,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 81 [2024-02-07 14:22:04,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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) [2024-02-07 14:22:04,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:04,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 81 [2024-02-07 14:22:04,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:04,814 INFO L124 PetriNetUnfolderBase]: 159/499 cut-off events. [2024-02-07 14:22:04,814 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-02-07 14:22:04,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1000 conditions, 499 events. 159/499 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2747 event pairs, 33 based on Foata normal form. 20/460 useless extension candidates. Maximal degree in co-relation 986. Up to 111 conditions per place. [2024-02-07 14:22:04,816 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 40 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-02-07 14:22:04,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 282 flow [2024-02-07 14:22:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:22:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:22:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-02-07 14:22:04,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3868312757201646 [2024-02-07 14:22:04,817 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 133 flow. Second operand 6 states and 188 transitions. [2024-02-07 14:22:04,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 282 flow [2024-02-07 14:22:04,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 273 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:22:04,818 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 151 flow [2024-02-07 14:22:04,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2024-02-07 14:22:04,819 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -26 predicate places. [2024-02-07 14:22:04,819 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 151 flow [2024-02-07 14:22:04,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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) [2024-02-07 14:22:04,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:04,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:04,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:22:04,820 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr8ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:22:04,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash 479433471, now seen corresponding path program 1 times [2024-02-07 14:22:04,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:04,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129145227] [2024-02-07 14:22:04,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:04,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:04,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:04,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129145227] [2024-02-07 14:22:04,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129145227] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:04,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:04,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:22:04,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924294677] [2024-02-07 14:22:04,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:04,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:22:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:04,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:22:04,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:22:04,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 81 [2024-02-07 14:22:04,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 45 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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) [2024-02-07 14:22:04,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:04,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 81 [2024-02-07 14:22:04,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:05,176 INFO L124 PetriNetUnfolderBase]: 211/580 cut-off events. [2024-02-07 14:22:05,176 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-02-07 14:22:05,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 580 events. 211/580 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3154 event pairs, 39 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 1226. Up to 80 conditions per place. [2024-02-07 14:22:05,178 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 70 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-02-07 14:22:05,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 463 flow [2024-02-07 14:22:05,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-07 14:22:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-07 14:22:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 322 transitions. [2024-02-07 14:22:05,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613916947250281 [2024-02-07 14:22:05,180 INFO L175 Difference]: Start difference. First operand has 60 places, 45 transitions, 151 flow. Second operand 11 states and 322 transitions. [2024-02-07 14:22:05,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 97 transitions, 463 flow [2024-02-07 14:22:05,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 460 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-07 14:22:05,182 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 224 flow [2024-02-07 14:22:05,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=224, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2024-02-07 14:22:05,184 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2024-02-07 14:22:05,184 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 224 flow [2024-02-07 14:22:05,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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) [2024-02-07 14:22:05,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:05,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:05,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:22:05,184 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting readerErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:22:05,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:05,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1828652065, now seen corresponding path program 1 times [2024-02-07 14:22:05,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:05,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706804022] [2024-02-07 14:22:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:05,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:05,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:05,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706804022] [2024-02-07 14:22:05,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706804022] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:05,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:05,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:22:05,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819527323] [2024-02-07 14:22:05,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:05,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:22:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:05,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:22:05,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:22:05,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 81 [2024-02-07 14:22:05,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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) [2024-02-07 14:22:05,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:05,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 81 [2024-02-07 14:22:05,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:05,609 INFO L124 PetriNetUnfolderBase]: 233/549 cut-off events. [2024-02-07 14:22:05,610 INFO L125 PetriNetUnfolderBase]: For 441/445 co-relation queries the response was YES. [2024-02-07 14:22:05,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 549 events. 233/549 cut-off events. For 441/445 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2611 event pairs, 57 based on Foata normal form. 28/570 useless extension candidates. Maximal degree in co-relation 1448. Up to 102 conditions per place. [2024-02-07 14:22:05,611 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 46 selfloop transitions, 9 changer transitions 24/92 dead transitions. [2024-02-07 14:22:05,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 92 transitions, 554 flow [2024-02-07 14:22:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 14:22:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 14:22:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-02-07 14:22:05,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337037037037037 [2024-02-07 14:22:05,613 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 224 flow. Second operand 10 states and 273 transitions. [2024-02-07 14:22:05,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 92 transitions, 554 flow [2024-02-07 14:22:05,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 92 transitions, 526 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-07 14:22:05,615 INFO L231 Difference]: Finished difference. Result has 82 places, 50 transitions, 226 flow [2024-02-07 14:22:05,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=226, PETRI_PLACES=82, PETRI_TRANSITIONS=50} [2024-02-07 14:22:05,616 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-02-07 14:22:05,616 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 50 transitions, 226 flow [2024-02-07 14:22:05,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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) [2024-02-07 14:22:05,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:05,616 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] [2024-02-07 14:22:05,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 14:22:05,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting readerErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:22:05,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:05,617 INFO L85 PathProgramCache]: Analyzing trace with hash -775742241, now seen corresponding path program 1 times [2024-02-07 14:22:05,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:05,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189817412] [2024-02-07 14:22:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:05,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:05,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:05,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189817412] [2024-02-07 14:22:05,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189817412] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:05,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:05,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:22:05,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610372970] [2024-02-07 14:22:05,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:05,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:22:05,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:22:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:22:05,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 81 [2024-02-07 14:22:05,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 50 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 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) [2024-02-07 14:22:05,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:05,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 81 [2024-02-07 14:22:05,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:06,007 INFO L124 PetriNetUnfolderBase]: 175/436 cut-off events. [2024-02-07 14:22:06,007 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2024-02-07 14:22:06,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 436 events. 175/436 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1913 event pairs, 43 based on Foata normal form. 12/447 useless extension candidates. Maximal degree in co-relation 1216. Up to 113 conditions per place. [2024-02-07 14:22:06,009 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 32 selfloop transitions, 3 changer transitions 22/67 dead transitions. [2024-02-07 14:22:06,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 67 transitions, 399 flow [2024-02-07 14:22:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:22:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:22:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-02-07 14:22:06,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3287037037037037 [2024-02-07 14:22:06,011 INFO L175 Difference]: Start difference. First operand has 82 places, 50 transitions, 226 flow. Second operand 8 states and 213 transitions. [2024-02-07 14:22:06,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 67 transitions, 399 flow [2024-02-07 14:22:06,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 67 transitions, 377 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-07 14:22:06,013 INFO L231 Difference]: Finished difference. Result has 72 places, 36 transitions, 141 flow [2024-02-07 14:22:06,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=141, PETRI_PLACES=72, PETRI_TRANSITIONS=36} [2024-02-07 14:22:06,014 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -14 predicate places. [2024-02-07 14:22:06,014 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 36 transitions, 141 flow [2024-02-07 14:22:06,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 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) [2024-02-07 14:22:06,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:06,014 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] [2024-02-07 14:22:06,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 14:22:06,015 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting readerErr8ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-02-07 14:22:06,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:06,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1994193506, now seen corresponding path program 1 times [2024-02-07 14:22:06,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:06,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901361471] [2024-02-07 14:22:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:06,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:06,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:06,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901361471] [2024-02-07 14:22:06,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901361471] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:06,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:06,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:22:06,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188899065] [2024-02-07 14:22:06,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:06,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:22:06,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:06,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:22:06,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:22:06,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 81 [2024-02-07 14:22:06,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 36 transitions, 141 flow. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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) [2024-02-07 14:22:06,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:06,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 81 [2024-02-07 14:22:06,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:06,353 INFO L124 PetriNetUnfolderBase]: 83/195 cut-off events. [2024-02-07 14:22:06,353 INFO L125 PetriNetUnfolderBase]: For 189/193 co-relation queries the response was YES. [2024-02-07 14:22:06,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 195 events. 83/195 cut-off events. For 189/193 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 598 event pairs, 33 based on Foata normal form. 10/204 useless extension candidates. Maximal degree in co-relation 563. Up to 78 conditions per place. [2024-02-07 14:22:06,354 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2024-02-07 14:22:06,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 51 transitions, 284 flow [2024-02-07 14:22:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:22:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:22:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-02-07 14:22:06,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33796296296296297 [2024-02-07 14:22:06,355 INFO L175 Difference]: Start difference. First operand has 72 places, 36 transitions, 141 flow. Second operand 8 states and 219 transitions. [2024-02-07 14:22:06,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 51 transitions, 284 flow [2024-02-07 14:22:06,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 238 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-02-07 14:22:06,356 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2024-02-07 14:22:06,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2024-02-07 14:22:06,357 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -29 predicate places. [2024-02-07 14:22:06,357 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2024-02-07 14:22:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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) [2024-02-07 14:22:06,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 34 remaining) [2024-02-07 14:22:06,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 34 remaining) [2024-02-07 14:22:06,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 34 remaining) [2024-02-07 14:22:06,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 34 remaining) [2024-02-07 14:22:06,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr4ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 34 remaining) [2024-02-07 14:22:06,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr5ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 34 remaining) [2024-02-07 14:22:06,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr6ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 34 remaining) [2024-02-07 14:22:06,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr7ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 34 remaining) [2024-02-07 14:22:06,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr8ASSERT_VIOLATIONERROR_FUNCTION (25 of 34 remaining) [2024-02-07 14:22:06,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 34 remaining) [2024-02-07 14:22:06,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 34 remaining) [2024-02-07 14:22:06,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 34 remaining) [2024-02-07 14:22:06,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 34 remaining) [2024-02-07 14:22:06,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr0ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 34 remaining) [2024-02-07 14:22:06,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 34 remaining) [2024-02-07 14:22:06,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 34 remaining) [2024-02-07 14:22:06,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 34 remaining) [2024-02-07 14:22:06,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 34 remaining) [2024-02-07 14:22:06,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr4ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 34 remaining) [2024-02-07 14:22:06,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr5ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 34 remaining) [2024-02-07 14:22:06,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr6ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 34 remaining) [2024-02-07 14:22:06,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr7ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 34 remaining) [2024-02-07 14:22:06,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr8ASSERT_VIOLATIONERROR_FUNCTION (11 of 34 remaining) [2024-02-07 14:22:06,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 34 remaining) [2024-02-07 14:22:06,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 34 remaining) [2024-02-07 14:22:06,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 34 remaining) [2024-02-07 14:22:06,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 34 remaining) [2024-02-07 14:22:06,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 34 remaining) [2024-02-07 14:22:06,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 34 remaining) [2024-02-07 14:22:06,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 34 remaining) [2024-02-07 14:22:06,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr7ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 34 remaining) [2024-02-07 14:22:06,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 34 remaining) [2024-02-07 14:22:06,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 34 remaining) [2024-02-07 14:22:06,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writerErr0ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 34 remaining) [2024-02-07 14:22:06,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 14:22:06,365 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:06,369 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:22:06,369 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:22:06,372 INFO L503 ceAbstractionStarter]: Automizer considered 9 witness invariants [2024-02-07 14:22:06,372 INFO L504 ceAbstractionStarter]: WitnessConsidered=9 [2024-02-07 14:22:06,373 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:22:06 BasicIcfg [2024-02-07 14:22:06,373 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:22:06,373 INFO L158 Benchmark]: Toolchain (without parser) took 26334.07ms. Allocated memory was 167.8MB in the beginning and 12.8GB in the end (delta: 12.6GB). Free memory was 105.5MB in the beginning and 11.4GB in the end (delta: -11.3GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-02-07 14:22:06,373 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:22:06,373 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 167.8MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:22:06,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.94ms. Allocated memory is still 167.8MB. Free memory was 105.0MB in the beginning and 73.1MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-02-07 14:22:06,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.57ms. Allocated memory is still 167.8MB. Free memory was 73.1MB in the beginning and 71.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:22:06,374 INFO L158 Benchmark]: Boogie Preprocessor took 107.77ms. Allocated memory was 167.8MB in the beginning and 264.2MB in the end (delta: 96.5MB). Free memory was 71.0MB in the beginning and 233.1MB in the end (delta: -162.1MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2024-02-07 14:22:06,374 INFO L158 Benchmark]: RCFGBuilder took 569.56ms. Allocated memory is still 264.2MB. Free memory was 233.1MB in the beginning and 189.0MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-02-07 14:22:06,375 INFO L158 Benchmark]: TraceAbstraction took 24943.02ms. Allocated memory was 264.2MB in the beginning and 12.8GB in the end (delta: 12.5GB). Free memory was 188.0MB in the beginning and 11.4GB in the end (delta: -11.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-02-07 14:22:06,375 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 167.8MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 647.94ms. Allocated memory is still 167.8MB. Free memory was 105.0MB in the beginning and 73.1MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.57ms. Allocated memory is still 167.8MB. Free memory was 73.1MB in the beginning and 71.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.77ms. Allocated memory was 167.8MB in the beginning and 264.2MB in the end (delta: 96.5MB). Free memory was 71.0MB in the beginning and 233.1MB in the end (delta: -162.1MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * RCFGBuilder took 569.56ms. Allocated memory is still 264.2MB. Free memory was 233.1MB in the beginning and 189.0MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 24943.02ms. Allocated memory was 264.2MB in the beginning and 12.8GB in the end (delta: 12.5GB). Free memory was 188.0MB in the beginning and 11.4GB in the end (delta: -11.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 703]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 706]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 709]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 710]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 710]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 710]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 34 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 22.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 947 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 859 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 117 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1917 IncrementalHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 12 mSDtfsCounter, 1917 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=285occurred in iteration=4, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 542 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 14:22:06,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE