./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:05:05,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:05:05,325 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:05:05,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:05:05,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:05:05,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:05:05,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:05:05,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:05:05,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:05:05,366 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:05:05,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:05:05,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:05:05,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:05:05,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:05:05,369 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:05:05,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:05:05,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:05:05,370 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:05:05,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:05:05,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:05:05,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:05:05,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:05:05,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:05:05,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:05:05,372 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:05:05,372 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:05:05,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:05:05,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:05:05,379 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:05:05,381 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:05:05,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:05:05,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:05:05,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:05:05,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:05:05,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:05:05,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:05:05,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:05:05,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:05:05,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:05:05,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:05:05,384 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:05:05,384 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:05:05,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:05:05,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:05:05,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:05:05,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:05:05,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:05:05,748 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:05:05,749 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:05:05,750 INFO L431 ainManager$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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-02-07 19:05:05,864 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:05:05,865 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:05:05,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 19:05:07,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:05:07,604 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:05:07,605 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 19:05:07,642 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c527992ee/ae36bd4b38d04555b83b2ea21834425e/FLAG56aff85fc [2024-02-07 19:05:07,676 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c527992ee/ae36bd4b38d04555b83b2ea21834425e [2024-02-07 19:05:07,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:05:07,680 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:05:07,683 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:05:07,683 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:05:07,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:05:07,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:05:05" (1/2) ... [2024-02-07 19:05:07,708 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7c3dd1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:05:07, skipping insertion in model container [2024-02-07 19:05:07,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:05:05" (1/2) ... [2024-02-07 19:05:07,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@218aebd1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:05:07, skipping insertion in model container [2024-02-07 19:05:07,710 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:05:07" (2/2) ... [2024-02-07 19:05:07,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7c3dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:07, skipping insertion in model container [2024-02-07 19:05:07,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:05:07" (2/2) ... [2024-02-07 19:05:07,711 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:05:07,843 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:05:07,845 INFO L76 edCorrectnessWitness]: Location invariant before [L756-L756] 1 <= __unbuffered_cnt [2024-02-07 19:05:07,845 INFO L76 edCorrectnessWitness]: Location invariant before [L755-L755] 0 <= __unbuffered_cnt [2024-02-07 19:05:07,845 INFO L76 edCorrectnessWitness]: Location invariant before [L747-L747] ((0 <= x) && (x <= 1)) && (x == 0 || x == 1) [2024-02-07 19:05:07,845 INFO L76 edCorrectnessWitness]: Location invariant before [L815-L815] ((((0 <= __unbuffered_p3_EAX) && (__unbuffered_p3_EAX <= 1)) && (__unbuffered_p0_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && ((__unbuffered_p1_EAX == 1 && (__unbuffered_p2_EAX == 1 || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) || (((((0 <= __unbuffered_p1_EAX && 0 <= __unbuffered_p2_EAX) && __unbuffered_p1_EAX <= 1) && __unbuffered_p2_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) [2024-02-07 19:05:07,845 INFO L76 edCorrectnessWitness]: Location invariant before [L751-L751] y == 1 [2024-02-07 19:05:07,846 INFO L76 edCorrectnessWitness]: Location invariant before [L777-L777] ((0 <= z) && (z <= 1)) && (z == 0 || z == 1) [2024-02-07 19:05:07,846 INFO L76 edCorrectnessWitness]: Location invariant before [L736-L736] x == 1 [2024-02-07 19:05:07,846 INFO L76 edCorrectnessWitness]: Location invariant before [L748-L748] ((0 <= __unbuffered_p1_EAX) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) [2024-02-07 19:05:07,846 INFO L76 edCorrectnessWitness]: Location invariant before [L762-L762] ((0 <= y) && (y <= 1)) && (y == 0 || y == 1) [2024-02-07 19:05:07,846 INFO L76 edCorrectnessWitness]: Location invariant before [L785-L785] 0 <= __unbuffered_cnt [2024-02-07 19:05:07,846 INFO L76 edCorrectnessWitness]: Location invariant before [L732-L732] ((0 <= a) && (a <= 1)) && (a == 0 || a == 1) [2024-02-07 19:05:07,846 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 19:05:07,847 INFO L76 edCorrectnessWitness]: Location invariant before [L817-L817] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:05:07,847 INFO L76 edCorrectnessWitness]: Location invariant before [L811-L811] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:05:07,847 INFO L76 edCorrectnessWitness]: Location invariant before [L781-L781] a == 1 [2024-02-07 19:05:07,847 INFO L76 edCorrectnessWitness]: Location invariant before [L809-L809] 0 <= __unbuffered_cnt [2024-02-07 19:05:07,847 INFO L76 edCorrectnessWitness]: Location invariant before [L740-L740] 0 <= __unbuffered_cnt [2024-02-07 19:05:07,847 INFO L76 edCorrectnessWitness]: Location invariant before [L770-L770] 0 <= __unbuffered_cnt [2024-02-07 19:05:07,847 INFO L76 edCorrectnessWitness]: Location invariant before [L816-L816] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:05:07,847 INFO L76 edCorrectnessWitness]: Location invariant before [L733-L733] ((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) [2024-02-07 19:05:07,847 INFO L76 edCorrectnessWitness]: Location invariant before [L810-L810] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:05:07,848 INFO L76 edCorrectnessWitness]: Location invariant before [L771-L771] 1 <= __unbuffered_cnt [2024-02-07 19:05:07,848 INFO L76 edCorrectnessWitness]: Location invariant before [L741-L741] 1 <= __unbuffered_cnt [2024-02-07 19:05:07,848 INFO L76 edCorrectnessWitness]: Location invariant before [L766-L766] z == 1 [2024-02-07 19:05:07,848 INFO L76 edCorrectnessWitness]: Location invariant before [L763-L763] ((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) [2024-02-07 19:05:07,848 INFO L76 edCorrectnessWitness]: Location invariant before [L786-L786] 1 <= __unbuffered_cnt [2024-02-07 19:05:07,848 INFO L76 edCorrectnessWitness]: Location invariant before [L778-L778] ((0 <= __unbuffered_p3_EAX) && (__unbuffered_p3_EAX <= 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) [2024-02-07 19:05:07,916 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:05:08,174 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-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-02-07 19:05:08,436 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:05:08,468 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 19:05:08,548 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-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:05:08,696 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:05:08,750 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:05:08,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08 WrapperNode [2024-02-07 19:05:08,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:05:08,766 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:05:08,766 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:05:08,766 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:05:08,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,826 INFO L138 Inliner]: procedures = 177, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2024-02-07 19:05:08,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:05:08,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:05:08,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:05:08,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:05:08,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,876 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-07 19:05:08,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,904 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:05:08,916 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:05:08,916 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:05:08,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:05:08,917 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (1/1) ... [2024-02-07 19:05:08,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:05:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:05:08,941 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 19:05:08,976 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 19:05:09,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:05:09,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:05:09,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:05:09,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:05:09,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:05:09,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:05:09,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:05:09,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:05:09,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:05:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 19:05:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 19:05:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 19:05:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 19:05:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 19:05:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 19:05:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-02-07 19:05:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-02-07 19:05:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:05:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:05:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:05:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:05:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:05:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:05:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:05:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:05:09,044 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 19:05:09,240 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:05:09,242 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:05:09,627 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:05:09,636 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:05:09,892 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:05:09,892 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:05:09,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:05:09 BoogieIcfgContainer [2024-02-07 19:05:09,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:05:09,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:05:09,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:05:09,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:05:09,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:05:05" (1/4) ... [2024-02-07 19:05:09,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dddd9e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:05:09, skipping insertion in model container [2024-02-07 19:05:09,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:05:07" (2/4) ... [2024-02-07 19:05:09,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dddd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:05:09, skipping insertion in model container [2024-02-07 19:05:09,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:05:08" (3/4) ... [2024-02-07 19:05:09,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dddd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:05:09, skipping insertion in model container [2024-02-07 19:05:09,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:05:09" (4/4) ... [2024-02-07 19:05:09,902 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 19:05:09,927 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:05:09,929 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2024-02-07 19:05:09,929 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:05:10,057 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:05:10,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 75 transitions, 166 flow [2024-02-07 19:05:10,175 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2024-02-07 19:05:10,192 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:05:10,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 235 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2024-02-07 19:05:10,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 75 transitions, 166 flow [2024-02-07 19:05:10,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 71 transitions, 154 flow [2024-02-07 19:05:10,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:05:10,215 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;@38afc3a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:05:10,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2024-02-07 19:05:10,218 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:05:10,218 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 19:05:10,219 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:05:10,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:10,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 19:05:10,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 49 more)] === [2024-02-07 19:05:10,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:10,228 INFO L85 PathProgramCache]: Analyzing trace with hash 11387582, now seen corresponding path program 1 times [2024-02-07 19:05:10,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:10,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048791238] [2024-02-07 19:05:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:10,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:10,672 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 19:05:10,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:10,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048791238] [2024-02-07 19:05:10,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048791238] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:10,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:10,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:05:10,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083277966] [2024-02-07 19:05:10,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:10,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:05:10,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:10,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:05:10,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:05:10,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-02-07 19:05:10,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 19:05:10,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:10,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-02-07 19:05:10,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:22,005 INFO L124 PetriNetUnfolderBase]: 68571/99217 cut-off events. [2024-02-07 19:05:22,005 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2024-02-07 19:05:22,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189451 conditions, 99217 events. 68571/99217 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 4254. Compared 789942 event pairs, 27607 based on Foata normal form. 2254/72289 useless extension candidates. Maximal degree in co-relation 189439. Up to 54636 conditions per place. [2024-02-07 19:05:23,414 INFO L140 encePairwiseOnDemand]: 57/75 looper letters, 63 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2024-02-07 19:05:23,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 81 transitions, 304 flow [2024-02-07 19:05:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:05:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:05:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-02-07 19:05:23,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-02-07 19:05:23,453 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 154 flow. Second operand 3 states and 153 transitions. [2024-02-07 19:05:23,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 81 transitions, 304 flow [2024-02-07 19:05:23,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 81 transitions, 300 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 19:05:23,505 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 128 flow [2024-02-07 19:05:23,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-02-07 19:05:23,511 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -15 predicate places. [2024-02-07 19:05:23,511 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 128 flow [2024-02-07 19:05:23,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 19:05:23,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:23,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:05:23,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:05:23,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 49 more)] === [2024-02-07 19:05:23,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:23,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1943311374, now seen corresponding path program 1 times [2024-02-07 19:05:23,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:23,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013951803] [2024-02-07 19:05:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:23,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:23,681 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 19:05:23,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:23,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013951803] [2024-02-07 19:05:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013951803] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:23,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:23,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:05:23,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267383585] [2024-02-07 19:05:23,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:23,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:05:23,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:23,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:05:23,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:05:23,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-02-07 19:05:23,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 19:05:23,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:23,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-02-07 19:05:23,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:30,359 INFO L124 PetriNetUnfolderBase]: 64424/92218 cut-off events. [2024-02-07 19:05:30,360 INFO L125 PetriNetUnfolderBase]: For 3858/3858 co-relation queries the response was YES. [2024-02-07 19:05:30,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183658 conditions, 92218 events. 64424/92218 cut-off events. For 3858/3858 co-relation queries the response was YES. Maximal size of possible extension queue 3938. Compared 732423 event pairs, 22348 based on Foata normal form. 0/67233 useless extension candidates. Maximal degree in co-relation 183647. Up to 56252 conditions per place. [2024-02-07 19:05:31,379 INFO L140 encePairwiseOnDemand]: 72/75 looper letters, 69 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-02-07 19:05:31,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 87 transitions, 341 flow [2024-02-07 19:05:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:05:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:05:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-02-07 19:05:31,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-02-07 19:05:31,417 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 128 flow. Second operand 3 states and 132 transitions. [2024-02-07 19:05:31,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 87 transitions, 341 flow [2024-02-07 19:05:31,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:05:31,443 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 132 flow [2024-02-07 19:05:31,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2024-02-07 19:05:31,444 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -14 predicate places. [2024-02-07 19:05:31,444 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 132 flow [2024-02-07 19:05:31,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 19:05:31,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:31,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:05:31,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:05:31,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 49 more)] === [2024-02-07 19:05:31,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash -54517116, now seen corresponding path program 1 times [2024-02-07 19:05:31,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:31,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510054559] [2024-02-07 19:05:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:31,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:31,558 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 19:05:31,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:31,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510054559] [2024-02-07 19:05:31,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510054559] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:31,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:31,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:05:31,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055599815] [2024-02-07 19:05:31,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:31,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:05:31,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:31,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:05:31,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:05:31,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-02-07 19:05:31,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 19:05:31,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:31,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-02-07 19:05:31,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:35,693 INFO L124 PetriNetUnfolderBase]: 52272/70492 cut-off events. [2024-02-07 19:05:35,693 INFO L125 PetriNetUnfolderBase]: For 4913/4915 co-relation queries the response was YES. [2024-02-07 19:05:35,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149149 conditions, 70492 events. 52272/70492 cut-off events. For 4913/4915 co-relation queries the response was YES. Maximal size of possible extension queue 2990. Compared 461439 event pairs, 16096 based on Foata normal form. 0/54467 useless extension candidates. Maximal degree in co-relation 149137. Up to 63604 conditions per place. [2024-02-07 19:05:36,463 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 64 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-02-07 19:05:36,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 342 flow [2024-02-07 19:05:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:05:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:05:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-02-07 19:05:36,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5955555555555555 [2024-02-07 19:05:36,468 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 132 flow. Second operand 3 states and 134 transitions. [2024-02-07 19:05:36,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 342 flow [2024-02-07 19:05:36,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:05:36,471 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 169 flow [2024-02-07 19:05:36,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-02-07 19:05:36,472 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -13 predicate places. [2024-02-07 19:05:36,472 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 169 flow [2024-02-07 19:05:36,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 19:05:36,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:36,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:05:36,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:05:36,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 49 more)] === [2024-02-07 19:05:36,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:36,474 INFO L85 PathProgramCache]: Analyzing trace with hash 786294081, now seen corresponding path program 1 times [2024-02-07 19:05:36,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:36,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685504765] [2024-02-07 19:05:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:36,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:36,511 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 19:05:36,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:36,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685504765] [2024-02-07 19:05:36,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685504765] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:36,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:36,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:05:36,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934669963] [2024-02-07 19:05:36,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:36,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:05:36,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:36,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:05:36,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:05:36,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-02-07 19:05:36,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 19:05:36,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:36,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-02-07 19:05:36,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:40,261 INFO L124 PetriNetUnfolderBase]: 49311/70051 cut-off events. [2024-02-07 19:05:40,262 INFO L125 PetriNetUnfolderBase]: For 8591/8593 co-relation queries the response was YES. [2024-02-07 19:05:40,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162306 conditions, 70051 events. 49311/70051 cut-off events. For 8591/8593 co-relation queries the response was YES. Maximal size of possible extension queue 3094. Compared 515702 event pairs, 21471 based on Foata normal form. 0/56139 useless extension candidates. Maximal degree in co-relation 162293. Up to 44037 conditions per place. [2024-02-07 19:05:40,971 INFO L140 encePairwiseOnDemand]: 72/75 looper letters, 74 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-02-07 19:05:40,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 416 flow [2024-02-07 19:05:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:05:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:05:40,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-02-07 19:05:40,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-02-07 19:05:40,974 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 169 flow. Second operand 3 states and 130 transitions. [2024-02-07 19:05:40,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 416 flow [2024-02-07 19:05:40,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:05:40,978 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 172 flow [2024-02-07 19:05:40,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-02-07 19:05:40,979 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -11 predicate places. [2024-02-07 19:05:40,979 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 172 flow [2024-02-07 19:05:40,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 19:05:40,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:40,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:05:40,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:05:40,980 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 49 more)] === [2024-02-07 19:05:40,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:40,980 INFO L85 PathProgramCache]: Analyzing trace with hash -914636144, now seen corresponding path program 1 times [2024-02-07 19:05:40,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:40,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321429675] [2024-02-07 19:05:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:40,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:41,044 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 19:05:41,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:41,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321429675] [2024-02-07 19:05:41,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321429675] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:41,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:41,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:05:41,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024193237] [2024-02-07 19:05:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:41,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:05:41,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:05:41,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:05:41,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-02-07 19:05:41,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 19:05:41,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:41,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-02-07 19:05:41,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:44,812 INFO L124 PetriNetUnfolderBase]: 45201/64359 cut-off events. [2024-02-07 19:05:44,812 INFO L125 PetriNetUnfolderBase]: For 11116/11118 co-relation queries the response was YES. [2024-02-07 19:05:44,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152336 conditions, 64359 events. 45201/64359 cut-off events. For 11116/11118 co-relation queries the response was YES. Maximal size of possible extension queue 2797. Compared 470620 event pairs, 21583 based on Foata normal form. 1293/53988 useless extension candidates. Maximal degree in co-relation 152321. Up to 38782 conditions per place. [2024-02-07 19:05:45,198 INFO L140 encePairwiseOnDemand]: 73/75 looper letters, 76 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2024-02-07 19:05:45,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 422 flow [2024-02-07 19:05:45,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:05:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:05:45,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-02-07 19:05:45,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822222222222222 [2024-02-07 19:05:45,200 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 172 flow. Second operand 3 states and 131 transitions. [2024-02-07 19:05:45,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 422 flow [2024-02-07 19:05:45,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 414 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:05:45,205 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 164 flow [2024-02-07 19:05:45,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-02-07 19:05:45,206 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -13 predicate places. [2024-02-07 19:05:45,206 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 164 flow [2024-02-07 19:05:45,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 19:05:45,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:45,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:05:45,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:05:45,207 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 49 more)] === [2024-02-07 19:05:45,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:45,207 INFO L85 PathProgramCache]: Analyzing trace with hash -287172911, now seen corresponding path program 1 times [2024-02-07 19:05:45,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:45,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330648716] [2024-02-07 19:05:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:45,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:45,238 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 19:05:45,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330648716] [2024-02-07 19:05:45,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330648716] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:45,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:45,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:05:45,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979067111] [2024-02-07 19:05:45,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:45,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:05:45,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:05:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:05:45,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-02-07 19:05:45,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:05:45,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:45,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-02-07 19:05:45,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:48,646 INFO L124 PetriNetUnfolderBase]: 42896/61865 cut-off events. [2024-02-07 19:05:48,646 INFO L125 PetriNetUnfolderBase]: For 10471/10471 co-relation queries the response was YES. [2024-02-07 19:05:49,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144029 conditions, 61865 events. 42896/61865 cut-off events. For 10471/10471 co-relation queries the response was YES. Maximal size of possible extension queue 2758. Compared 463253 event pairs, 16823 based on Foata normal form. 0/51082 useless extension candidates. Maximal degree in co-relation 144016. Up to 37800 conditions per place. [2024-02-07 19:05:49,383 INFO L140 encePairwiseOnDemand]: 72/75 looper letters, 70 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-02-07 19:05:49,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 88 transitions, 394 flow [2024-02-07 19:05:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:05:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:05:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-02-07 19:05:49,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-02-07 19:05:49,384 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 164 flow. Second operand 3 states and 126 transitions. [2024-02-07 19:05:49,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 88 transitions, 394 flow [2024-02-07 19:05:49,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 88 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:05:49,388 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 171 flow [2024-02-07 19:05:49,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2024-02-07 19:05:49,389 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -11 predicate places. [2024-02-07 19:05:49,389 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 171 flow [2024-02-07 19:05:49,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:05:49,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:49,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:05:49,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:05:49,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 49 more)] === [2024-02-07 19:05:49,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:49,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1614075752, now seen corresponding path program 1 times [2024-02-07 19:05:49,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:49,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283111235] [2024-02-07 19:05:49,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:49,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:49,440 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 19:05:49,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283111235] [2024-02-07 19:05:49,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283111235] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:49,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:49,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:05:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316372215] [2024-02-07 19:05:49,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:49,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:05:49,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:49,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:05:49,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:05:49,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-02-07 19:05:49,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:05:49,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:49,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-02-07 19:05:49,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:52,810 INFO L124 PetriNetUnfolderBase]: 38980/55330 cut-off events. [2024-02-07 19:05:52,810 INFO L125 PetriNetUnfolderBase]: For 9625/9625 co-relation queries the response was YES. [2024-02-07 19:05:52,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134024 conditions, 55330 events. 38980/55330 cut-off events. For 9625/9625 co-relation queries the response was YES. Maximal size of possible extension queue 2427. Compared 392755 event pairs, 15509 based on Foata normal form. 1234/47784 useless extension candidates. Maximal degree in co-relation 134009. Up to 36609 conditions per place. [2024-02-07 19:05:53,144 INFO L140 encePairwiseOnDemand]: 73/75 looper letters, 73 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2024-02-07 19:05:53,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 412 flow [2024-02-07 19:05:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:05:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:05:53,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-02-07 19:05:53,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688888888888889 [2024-02-07 19:05:53,146 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 171 flow. Second operand 3 states and 128 transitions. [2024-02-07 19:05:53,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 412 flow [2024-02-07 19:05:53,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 404 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:05:53,151 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 163 flow [2024-02-07 19:05:53,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-02-07 19:05:53,152 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -13 predicate places. [2024-02-07 19:05:53,152 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 163 flow [2024-02-07 19:05:53,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:05:53,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:53,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:05:53,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:05:53,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 49 more)] === [2024-02-07 19:05:53,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash -312498630, now seen corresponding path program 1 times [2024-02-07 19:05:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:53,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510406541] [2024-02-07 19:05:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:53,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:53,227 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 19:05:53,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:53,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510406541] [2024-02-07 19:05:53,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510406541] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:53,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:53,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:05:53,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551921018] [2024-02-07 19:05:53,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:53,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:05:53,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:53,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:05:53,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:05:53,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 75 [2024-02-07 19:05:53,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:05:53,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:53,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 75 [2024-02-07 19:05:53,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:57,071 INFO L124 PetriNetUnfolderBase]: 38980/59989 cut-off events. [2024-02-07 19:05:57,072 INFO L125 PetriNetUnfolderBase]: For 10680/10680 co-relation queries the response was YES. [2024-02-07 19:05:57,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136871 conditions, 59989 events. 38980/59989 cut-off events. For 10680/10680 co-relation queries the response was YES. Maximal size of possible extension queue 2575. Compared 493683 event pairs, 36112 based on Foata normal form. 0/49207 useless extension candidates. Maximal degree in co-relation 136858. Up to 51575 conditions per place. [2024-02-07 19:05:57,435 INFO L140 encePairwiseOnDemand]: 73/75 looper letters, 41 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-02-07 19:05:57,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 245 flow [2024-02-07 19:05:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:05:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:05:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-02-07 19:05:57,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-02-07 19:05:57,437 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 163 flow. Second operand 3 states and 96 transitions. [2024-02-07 19:05:57,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 245 flow [2024-02-07 19:05:57,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 57 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:05:57,443 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 162 flow [2024-02-07 19:05:57,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-02-07 19:05:57,444 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -13 predicate places. [2024-02-07 19:05:57,444 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 162 flow [2024-02-07 19:05:57,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:05:57,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:57,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:05:57,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:05:57,445 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 49 more)] === [2024-02-07 19:05:57,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash 407137458, now seen corresponding path program 1 times [2024-02-07 19:05:57,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:57,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804755027] [2024-02-07 19:05:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:57,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:57,523 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 19:05:57,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:57,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804755027] [2024-02-07 19:05:57,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804755027] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:57,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:57,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:05:57,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332585980] [2024-02-07 19:05:57,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:57,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:05:57,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:57,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:05:57,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:05:57,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-02-07 19:05:57,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 162 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 19:05:57,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:57,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-02-07 19:05:57,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:00,650 INFO L124 PetriNetUnfolderBase]: 35537/51750 cut-off events. [2024-02-07 19:06:00,650 INFO L125 PetriNetUnfolderBase]: For 7437/7437 co-relation queries the response was YES. [2024-02-07 19:06:00,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121526 conditions, 51750 events. 35537/51750 cut-off events. For 7437/7437 co-relation queries the response was YES. Maximal size of possible extension queue 2254. Compared 385377 event pairs, 13040 based on Foata normal form. 1080/44491 useless extension candidates. Maximal degree in co-relation 121516. Up to 29189 conditions per place. [2024-02-07 19:06:01,008 INFO L140 encePairwiseOnDemand]: 73/75 looper letters, 66 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2024-02-07 19:06:01,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 82 transitions, 367 flow [2024-02-07 19:06:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:06:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:06:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-02-07 19:06:01,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377777777777778 [2024-02-07 19:06:01,010 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 162 flow. Second operand 3 states and 121 transitions. [2024-02-07 19:06:01,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 82 transitions, 367 flow [2024-02-07 19:06:01,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:06:01,011 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 157 flow [2024-02-07 19:06:01,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2024-02-07 19:06:01,012 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -14 predicate places. [2024-02-07 19:06:01,012 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 157 flow [2024-02-07 19:06:01,013 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 19:06:01,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:01,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:01,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:06:01,013 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 49 more)] === [2024-02-07 19:06:01,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:01,014 INFO L85 PathProgramCache]: Analyzing trace with hash -545629325, now seen corresponding path program 1 times [2024-02-07 19:06:01,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:01,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665260038] [2024-02-07 19:06:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:01,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:01,076 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 19:06:01,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665260038] [2024-02-07 19:06:01,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665260038] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:01,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:01,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:06:01,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620260096] [2024-02-07 19:06:01,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:01,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:06:01,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:01,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:06:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:06:01,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-02-07 19:06:01,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 157 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 19:06:01,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:01,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-02-07 19:06:01,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand