./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/bench-exp3x3-opt.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d8006e4b 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/weaver/bench-exp3x3-opt.wvr.c ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/bench-exp3x3-opt.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-d8006e4-m [2024-02-05 10:31:43,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:31:44,041 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:31:44,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:31:44,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:31:44,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:31:44,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:31:44,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:31:44,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:31:44,083 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:31:44,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:31:44,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:31:44,085 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:31:44,086 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:31:44,086 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:31:44,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:31:44,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:31:44,087 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:31:44,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:31:44,087 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:31:44,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:31:44,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:31:44,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:31:44,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:31:44,089 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:31:44,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:31:44,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:31:44,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:31:44,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:31:44,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:31:44,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:31:44,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:31:44,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:31:44,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:31:44,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:31:44,093 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:31:44,093 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:31:44,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:31:44,093 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:31:44,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:31:44,094 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:31:44,094 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:31:44,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:31:44,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:31:44,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:31:44,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:31:44,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:31:44,394 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:31:44,394 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:31:44,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2024-02-05 10:31:45,623 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:31:45,815 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:31:45,816 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2024-02-05 10:31:45,823 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8ed05174/42d5bfa83dca4d9499eb49c39c53608d/FLAG18c3f22f5 [2024-02-05 10:31:45,838 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8ed05174/42d5bfa83dca4d9499eb49c39c53608d [2024-02-05 10:31:45,840 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:31:45,841 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:31:45,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/bench-exp3x3-opt.wvr.yml/witness.yml [2024-02-05 10:31:45,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:31:45,947 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:31:45,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:31:45,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:31:45,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:31:45,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:31:45" (1/2) ... [2024-02-05 10:31:45,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b779ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:31:45, skipping insertion in model container [2024-02-05 10:31:45,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:31:45" (1/2) ... [2024-02-05 10:31:45,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49c9384a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:31:45, skipping insertion in model container [2024-02-05 10:31:45,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:31:45" (2/2) ... [2024-02-05 10:31:45,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b779ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:45, skipping insertion in model container [2024-02-05 10:31:45,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:31:45" (2/2) ... [2024-02-05 10:31:45,957 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:31:45,987 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:31:45,988 INFO L101 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,988 INFO L101 nessWitnessExtractor]: Loop invariant at [L81-L81] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,988 INFO L101 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,988 INFO L101 nessWitnessExtractor]: Location invariant before [L85-L85] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,988 INFO L101 nessWitnessExtractor]: Location invariant before [L95-L95] (((x4 == 0U) && (x5 == 0U)) && (x6 == 0U)) && (n == 0U) [2024-02-05 10:31:45,989 INFO L101 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,989 INFO L101 nessWitnessExtractor]: Loop invariant at [L41-L41] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,989 INFO L101 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,989 INFO L101 nessWitnessExtractor]: Location invariant before [L97-L97] (x6 == 0U) && (n == 0U) [2024-02-05 10:31:45,989 INFO L101 nessWitnessExtractor]: Loop invariant at [L65-L65] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,989 INFO L101 nessWitnessExtractor]: Location invariant before [L94-L94] ((((x3 == 0U) && (x4 == 0U)) && (x5 == 0U)) && (x6 == 0U)) && (n == 0U) [2024-02-05 10:31:45,990 INFO L101 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,990 INFO L101 nessWitnessExtractor]: Loop invariant at [L73-L73] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,990 INFO L101 nessWitnessExtractor]: Location invariant before [L96-L96] ((x5 == 0U) && (x6 == 0U)) && (n == 0U) [2024-02-05 10:31:45,990 INFO L101 nessWitnessExtractor]: Location invariant before [L93-L93] (((((x2 == 0U) && (x3 == 0U)) && (x4 == 0U)) && (x5 == 0U)) && (x6 == 0U)) && (n == 0U) [2024-02-05 10:31:45,990 INFO L101 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,990 INFO L101 nessWitnessExtractor]: Location invariant before [L92-L92] (((((((((((0LL - (long long )n) + (long long )x1 >= 0LL) && ((long long )n + (long long )x1 >= 0LL)) && ((0LL - (long long )n) - (long long )x1 >= 0LL)) && ((long long )n - (long long )x1 >= 0LL)) && (x1 == 0U)) && (x2 == 0U)) && (x3 == 0U)) && (x4 == 0U)) && (x5 == 0U)) && (x6 == 0U)) && (n == 0U) [2024-02-05 10:31:45,991 INFO L101 nessWitnessExtractor]: Location invariant before [L69-L69] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,991 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,991 INFO L101 nessWitnessExtractor]: Location invariant before [L77-L77] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,991 INFO L101 nessWitnessExtractor]: Loop invariant at [L49-L49] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,992 INFO L101 nessWitnessExtractor]: Loop invariant at [L57-L57] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,992 INFO L101 nessWitnessExtractor]: Location invariant before [L98-L98] n == 0U [2024-02-05 10:31:45,992 INFO L101 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-02-05 10:31:45,992 INFO L101 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-02-05 10:31:46,017 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:31:46,172 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-02-05 10:31:46,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:31:46,193 INFO L204 MainTranslator]: Completed pre-run 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 [2024-02-05 10:31:46,273 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-02-05 10:31:46,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:31:46,304 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:31:46,305 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46 WrapperNode [2024-02-05 10:31:46,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:31:46,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:31:46,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:31:46,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:31:46,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,379 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 138 [2024-02-05 10:31:46,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:31:46,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:31:46,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:31:46,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:31:46,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,438 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2024-02-05 10:31:46,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,453 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:31:46,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:31:46,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:31:46,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:31:46,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (1/1) ... [2024-02-05 10:31:46,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:31:46,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:31:46,502 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) [2024-02-05 10:31:46,504 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 [2024-02-05 10:31:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:31:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:31:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:31:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:31:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:31:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-05 10:31:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-05 10:31:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-05 10:31:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-02-05 10:31:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-05 10:31:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-05 10:31:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-05 10:31:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-05 10:31:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-05 10:31:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-05 10:31:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-02-05 10:31:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-05 10:31:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-05 10:31:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-05 10:31:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-05 10:31:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-05 10:31:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-05 10:31:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-05 10:31:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-05 10:31:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:31:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:31:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:31:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-05 10:31:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-05 10:31:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-05 10:31:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-02-05 10:31:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-02-05 10:31:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-02-05 10:31:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-02-05 10:31:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-02-05 10:31:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:31:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:31:46,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:31:46,540 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-05 10:31:46,666 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:31:46,668 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:31:47,001 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:31:47,002 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:31:47,172 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:31:47,174 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-05 10:31:47,175 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:31:47 BoogieIcfgContainer [2024-02-05 10:31:47,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:31:47,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:31:47,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:31:47,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:31:47,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:31:45" (1/4) ... [2024-02-05 10:31:47,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ae132a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:31:47, skipping insertion in model container [2024-02-05 10:31:47,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:31:45" (2/4) ... [2024-02-05 10:31:47,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ae132a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:31:47, skipping insertion in model container [2024-02-05 10:31:47,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:46" (3/4) ... [2024-02-05 10:31:47,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ae132a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:31:47, skipping insertion in model container [2024-02-05 10:31:47,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:31:47" (4/4) ... [2024-02-05 10:31:47,187 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2024-02-05 10:31:47,200 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:31:47,201 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-02-05 10:31:47,201 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:31:47,292 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-02-05 10:31:47,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 107 transitions, 256 flow [2024-02-05 10:31:47,401 INFO L124 PetriNetUnfolderBase]: 12/101 cut-off events. [2024-02-05 10:31:47,401 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-05 10:31:47,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 101 events. 12/101 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 240 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2024-02-05 10:31:47,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 107 transitions, 256 flow [2024-02-05 10:31:47,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 100 transitions, 236 flow [2024-02-05 10:31:47,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:31:47,427 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;@63998c30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:31:47,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-02-05 10:31:47,430 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:31:47,431 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:31:47,431 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:31:47,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:47,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:31:47,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-02-05 10:31:47,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:47,437 INFO L85 PathProgramCache]: Analyzing trace with hash 15172, now seen corresponding path program 1 times [2024-02-05 10:31:47,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:47,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364451912] [2024-02-05 10:31:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:47,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:48,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:48,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364451912] [2024-02-05 10:31:48,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364451912] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:48,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:48,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:31:48,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53618959] [2024-02-05 10:31:48,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:48,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:31:48,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:48,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:31:48,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:31:48,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2024-02-05 10:31:48,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-02-05 10:31:48,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:48,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2024-02-05 10:31:48,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:59,766 INFO L124 PetriNetUnfolderBase]: 81529/115487 cut-off events. [2024-02-05 10:31:59,766 INFO L125 PetriNetUnfolderBase]: For 2857/2857 co-relation queries the response was YES. [2024-02-05 10:32:00,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213774 conditions, 115487 events. 81529/115487 cut-off events. For 2857/2857 co-relation queries the response was YES. Maximal size of possible extension queue 5286. Compared 891787 event pairs, 47060 based on Foata normal form. 34099/139755 useless extension candidates. Maximal degree in co-relation 175048. Up to 94184 conditions per place. [2024-02-05 10:32:01,320 INFO L140 encePairwiseOnDemand]: 98/107 looper letters, 54 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-02-05 10:32:01,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 93 transitions, 334 flow [2024-02-05 10:32:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:32:01,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:32:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-02-05 10:32:01,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2024-02-05 10:32:01,338 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 236 flow. Second operand 3 states and 192 transitions. [2024-02-05 10:32:01,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 93 transitions, 334 flow [2024-02-05 10:32:01,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 310 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-02-05 10:32:01,512 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 202 flow [2024-02-05 10:32:01,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2024-02-05 10:32:01,518 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -11 predicate places. [2024-02-05 10:32:01,518 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 202 flow [2024-02-05 10:32:01,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-02-05 10:32:01,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:01,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-05 10:32:01,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:32:01,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-02-05 10:32:01,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash 470817, now seen corresponding path program 1 times [2024-02-05 10:32:01,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:01,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912409662] [2024-02-05 10:32:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:01,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:01,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:01,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912409662] [2024-02-05 10:32:01,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912409662] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:01,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:01,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:32:01,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440798385] [2024-02-05 10:32:01,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:01,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:32:01,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:01,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:32:01,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:32:01,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2024-02-05 10:32:01,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2024-02-05 10:32:01,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:01,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2024-02-05 10:32:01,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:09,566 INFO L124 PetriNetUnfolderBase]: 81529/115486 cut-off events. [2024-02-05 10:32:09,567 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-02-05 10:32:09,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211039 conditions, 115486 events. 81529/115486 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5286. Compared 891609 event pairs, 47060 based on Foata normal form. 0/105656 useless extension candidates. Maximal degree in co-relation 211030. Up to 94182 conditions per place. [2024-02-05 10:32:10,822 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 53 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-02-05 10:32:10,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 310 flow [2024-02-05 10:32:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:32:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:32:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2024-02-05 10:32:10,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5856697819314641 [2024-02-05 10:32:10,825 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 202 flow. Second operand 3 states and 188 transitions. [2024-02-05 10:32:10,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 310 flow [2024-02-05 10:32:10,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 92 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:32:10,829 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 200 flow [2024-02-05 10:32:10,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-02-05 10:32:10,830 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -12 predicate places. [2024-02-05 10:32:10,830 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 200 flow [2024-02-05 10:32:10,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2024-02-05 10:32:10,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:10,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-05 10:32:10,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:32:10,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-02-05 10:32:10,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:10,832 INFO L85 PathProgramCache]: Analyzing trace with hash 14595839, now seen corresponding path program 1 times [2024-02-05 10:32:10,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:10,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979813237] [2024-02-05 10:32:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:10,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:10,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:10,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979813237] [2024-02-05 10:32:10,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979813237] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:10,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:10,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:32:10,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856231210] [2024-02-05 10:32:10,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:10,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:32:10,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:10,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:32:10,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:32:10,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 107 [2024-02-05 10:32:10,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2024-02-05 10:32:10,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:10,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 107 [2024-02-05 10:32:10,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:18,555 INFO L124 PetriNetUnfolderBase]: 81529/115485 cut-off events. [2024-02-05 10:32:18,555 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-02-05 10:32:18,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211037 conditions, 115485 events. 81529/115485 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5286. Compared 892001 event pairs, 47060 based on Foata normal form. 0/105656 useless extension candidates. Maximal degree in co-relation 211026. Up to 94180 conditions per place. [2024-02-05 10:32:19,801 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 52 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2024-02-05 10:32:19,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 91 transitions, 306 flow [2024-02-05 10:32:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:32:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:32:19,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2024-02-05 10:32:19,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5919003115264797 [2024-02-05 10:32:19,804 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 200 flow. Second operand 3 states and 190 transitions. [2024-02-05 10:32:19,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 91 transitions, 306 flow [2024-02-05 10:32:19,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 91 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:32:19,807 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 198 flow [2024-02-05 10:32:19,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-02-05 10:32:19,808 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -13 predicate places. [2024-02-05 10:32:19,808 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 198 flow [2024-02-05 10:32:19,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2024-02-05 10:32:19,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:19,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-05 10:32:19,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:32:19,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-02-05 10:32:19,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:19,809 INFO L85 PathProgramCache]: Analyzing trace with hash 452471473, now seen corresponding path program 1 times [2024-02-05 10:32:19,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:19,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419443024] [2024-02-05 10:32:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:19,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:19,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:19,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419443024] [2024-02-05 10:32:19,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419443024] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:19,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:19,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:32:19,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893622818] [2024-02-05 10:32:19,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:19,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:32:19,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:19,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:32:19,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:32:19,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 107 [2024-02-05 10:32:19,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-02-05 10:32:19,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:19,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 107 [2024-02-05 10:32:19,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:27,076 INFO L124 PetriNetUnfolderBase]: 81529/115484 cut-off events. [2024-02-05 10:32:27,077 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-02-05 10:32:27,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211035 conditions, 115484 events. 81529/115484 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5286. Compared 891588 event pairs, 47060 based on Foata normal form. 0/105656 useless extension candidates. Maximal degree in co-relation 211022. Up to 94178 conditions per place. [2024-02-05 10:32:28,128 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 51 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-02-05 10:32:28,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 302 flow [2024-02-05 10:32:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:32:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:32:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-02-05 10:32:28,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2024-02-05 10:32:28,130 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 198 flow. Second operand 3 states and 192 transitions. [2024-02-05 10:32:28,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 302 flow [2024-02-05 10:32:28,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:32:28,132 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 196 flow [2024-02-05 10:32:28,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-02-05 10:32:28,424 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -14 predicate places. [2024-02-05 10:32:28,425 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 196 flow [2024-02-05 10:32:28,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-02-05 10:32:28,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:28,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-05 10:32:28,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:32:28,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-02-05 10:32:28,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:28,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1141714277, now seen corresponding path program 1 times [2024-02-05 10:32:28,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:28,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088198520] [2024-02-05 10:32:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:28,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:28,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:28,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088198520] [2024-02-05 10:32:28,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088198520] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:28,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:28,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:32:28,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031501394] [2024-02-05 10:32:28,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:28,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:32:28,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:32:28,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:32:28,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 107 [2024-02-05 10:32:28,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-02-05 10:32:28,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:28,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 107 [2024-02-05 10:32:28,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand