./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-bakery-3.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-bakery-3.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 20:58:36,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 20:58:36,221 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 20:58:36,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 20:58:36,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 20:58:36,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 20:58:36,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 20:58:36,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 20:58:36,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 20:58:36,258 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 20:58:36,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 20:58:36,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 20:58:36,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 20:58:36,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 20:58:36,261 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 20:58:36,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 20:58:36,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 20:58:36,261 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 20:58:36,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 20:58:36,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 20:58:36,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 20:58:36,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 20:58:36,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 20:58:36,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 20:58:36,264 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 20:58:36,264 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 20:58:36,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 20:58:36,265 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 20:58:36,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 20:58:36,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 20:58:36,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 20:58:36,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 20:58:36,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:58:36,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 20:58:36,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 20:58:36,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 20:58:36,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 20:58:36,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 20:58:36,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 20:58:36,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 20:58:36,268 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 20:58:36,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 20:58:36,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 20:58:36,268 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 20:58:36,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 20:58:36,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 20:58:36,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 20:58:36,479 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 20:58:36,480 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 20:58:36,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2024-06-03 20:58:37,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 20:58:37,741 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 20:58:37,742 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2024-06-03 20:58:37,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3bf141e/4581840b46064a8b934c06c6e63e1f7e/FLAGdd3675bba [2024-06-03 20:58:37,765 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3bf141e/4581840b46064a8b934c06c6e63e1f7e [2024-06-03 20:58:37,767 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 20:58:37,767 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 20:58:37,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-bakery-3.wvr.yml/witness.yml [2024-06-03 20:58:37,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 20:58:37,846 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 20:58:37,847 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 20:58:37,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 20:58:37,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 20:58:37,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:58:37" (1/2) ... [2024-06-03 20:58:37,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f62361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:58:37, skipping insertion in model container [2024-06-03 20:58:37,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:58:37" (1/2) ... [2024-06-03 20:58:37,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@dba3fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:58:37, skipping insertion in model container [2024-06-03 20:58:37,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:58:37" (2/2) ... [2024-06-03 20:58:37,856 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f62361 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:37, skipping insertion in model container [2024-06-03 20:58:37,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:58:37" (2/2) ... [2024-06-03 20:58:37,856 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 20:58:37,872 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 20:58:37,873 INFO L97 edCorrectnessWitness]: Location invariant before [L189-L189] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )e1) + (long long )n1 >= 0LL && (2147483648LL + (long long )e1) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i >= 0LL) && (2147483648LL + (long long )e1) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i >= 0LL) && (2147483648LL + (long long )e2) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i >= 0LL) && (2147483648LL + (long long )e3) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i3 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )n2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )i1 >= 0LL) && (4294967296LL + (long long )i) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n3 >= 0LL) && (1LL - (long long )e1) + (long long )e2 >= 0LL) && (1LL - (long long )e1) + (long long )e3 >= 0LL) && (1LL - (long long )e2) + (long long )e3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i >= 0LL) && (2147483649LL - (long long )e1) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i >= 0LL) && (2147483649LL - (long long )e2) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i >= 0LL) && (2147483649LL - (long long )e3) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i3 >= 0LL) && (long long )e1 + (long long )e2 >= 0LL) && (long long )e1 + (long long )e3 >= 0LL) && (long long )e2 + (long long )e3 >= 0LL) && (1LL + (long long )e1) - (long long )e2 >= 0LL) && (1LL + (long long )e1) - (long long )e3 >= 0LL) && (1LL + (long long )e2) - (long long )e3 >= 0LL) && (2LL - (long long )e1) - (long long )e2 >= 0LL) && (2LL - (long long )e1) - (long long )e3 >= 0LL) && (2LL - (long long )e2) - (long long )e3 >= 0LL) [2024-06-03 20:58:37,874 INFO L97 edCorrectnessWitness]: Location invariant before [L190-L190] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )e1) + (long long )n1 >= 0LL && (2147483648LL + (long long )e1) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i >= 0LL) && (2147483648LL + (long long )e1) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i >= 0LL) && (2147483648LL + (long long )e2) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i >= 0LL) && (2147483648LL + (long long )e3) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i3 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )n2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )i1 >= 0LL) && (4294967296LL + (long long )i) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n3 >= 0LL) && (1LL - (long long )e1) + (long long )e2 >= 0LL) && (1LL - (long long )e1) + (long long )e3 >= 0LL) && (1LL - (long long )e2) + (long long )e3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i >= 0LL) && (2147483649LL - (long long )e1) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i >= 0LL) && (2147483649LL - (long long )e2) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i >= 0LL) && (2147483649LL - (long long )e3) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i3 >= 0LL) && (long long )e1 + (long long )e2 >= 0LL) && (long long )e1 + (long long )e3 >= 0LL) && (long long )e2 + (long long )e3 >= 0LL) && (1LL + (long long )e1) - (long long )e2 >= 0LL) && (1LL + (long long )e1) - (long long )e3 >= 0LL) && (1LL + (long long )e2) - (long long )e3 >= 0LL) && (2LL - (long long )e1) - (long long )e2 >= 0LL) && (2LL - (long long )e1) - (long long )e3 >= 0LL) && (2LL - (long long )e2) - (long long )e3 >= 0LL) [2024-06-03 20:58:37,874 INFO L97 edCorrectnessWitness]: Location invariant before [L191-L191] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )e1) + (long long )n1 >= 0LL && (2147483648LL + (long long )e1) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i >= 0LL) && (2147483648LL + (long long )e1) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i >= 0LL) && (2147483648LL + (long long )e2) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i >= 0LL) && (2147483648LL + (long long )e3) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i3 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )n2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )i1 >= 0LL) && (4294967296LL + (long long )i) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n3 >= 0LL) && (1LL - (long long )e1) + (long long )e2 >= 0LL) && (1LL - (long long )e1) + (long long )e3 >= 0LL) && (1LL - (long long )e2) + (long long )e3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i >= 0LL) && (2147483649LL - (long long )e1) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i >= 0LL) && (2147483649LL - (long long )e2) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i >= 0LL) && (2147483649LL - (long long )e3) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i3 >= 0LL) && (long long )e1 + (long long )e2 >= 0LL) && (long long )e1 + (long long )e3 >= 0LL) && (long long )e2 + (long long )e3 >= 0LL) && (1LL + (long long )e1) - (long long )e2 >= 0LL) && (1LL + (long long )e1) - (long long )e3 >= 0LL) && (1LL + (long long )e2) - (long long )e3 >= 0LL) && (2LL - (long long )e1) - (long long )e2 >= 0LL) && (2LL - (long long )e1) - (long long )e3 >= 0LL) && (2LL - (long long )e2) - (long long )e3 >= 0LL) [2024-06-03 20:58:37,874 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 20:58:37,874 INFO L106 edCorrectnessWitness]: ghost_update [L188-L188] multithreaded = 1; [2024-06-03 20:58:37,895 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 20:58:38,066 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:58:38,073 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 20:58:38,195 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:58:38,206 INFO L206 MainTranslator]: Completed translation [2024-06-03 20:58:38,207 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38 WrapperNode [2024-06-03 20:58:38,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 20:58:38,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 20:58:38,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 20:58:38,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 20:58:38,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,259 INFO L138 Inliner]: procedures = 21, calls = 96, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 257 [2024-06-03 20:58:38,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 20:58:38,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 20:58:38,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 20:58:38,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 20:58:38,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,316 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 20:58:38,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,327 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 20:58:38,361 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 20:58:38,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 20:58:38,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 20:58:38,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (1/1) ... [2024-06-03 20:58:38,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:58:38,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 20:58:38,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 20:58:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 20:58:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 20:58:38,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 20:58:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 20:58:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 20:58:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-03 20:58:38,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 20:58:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-03 20:58:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 20:58:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 20:58:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 20:58:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 20:58:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 20:58:38,424 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 20:58:38,524 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 20:58:38,526 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 20:58:39,037 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 20:58:39,037 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 20:58:39,242 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 20:58:39,242 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 20:58:39,243 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:58:39 BoogieIcfgContainer [2024-06-03 20:58:39,243 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 20:58:39,246 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 20:58:39,246 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 20:58:39,249 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 20:58:39,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 08:58:37" (1/4) ... [2024-06-03 20:58:39,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5520c5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:58:39, skipping insertion in model container [2024-06-03 20:58:39,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:58:37" (2/4) ... [2024-06-03 20:58:39,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5520c5b5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:58:39, skipping insertion in model container [2024-06-03 20:58:39,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:38" (3/4) ... [2024-06-03 20:58:39,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5520c5b5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:58:39, skipping insertion in model container [2024-06-03 20:58:39,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:58:39" (4/4) ... [2024-06-03 20:58:39,256 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2024-06-03 20:58:39,275 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 20:58:39,275 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-03 20:58:39,276 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 20:58:39,351 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-03 20:58:39,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 61 transitions, 143 flow [2024-06-03 20:58:39,421 INFO L124 PetriNetUnfolderBase]: 0/58 cut-off events. [2024-06-03 20:58:39,421 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-03 20:58:39,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 58 events. 0/58 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-03 20:58:39,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 61 transitions, 143 flow [2024-06-03 20:58:39,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 53 transitions, 115 flow [2024-06-03 20:58:39,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 20:58:39,443 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;@176a1f9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 20:58:39,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-03 20:58:39,447 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 20:58:39,447 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 20:58:39,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:58:39,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:39,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 20:58:39,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:39,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:39,452 INFO L85 PathProgramCache]: Analyzing trace with hash -837491569, now seen corresponding path program 1 times [2024-06-03 20:58:39,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:39,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42674824] [2024-06-03 20:58:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:39,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:40,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:40,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42674824] [2024-06-03 20:58:40,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42674824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:40,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:40,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 20:58:40,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404214199] [2024-06-03 20:58:40,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:40,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:58:40,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:40,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:58:40,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:58:40,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-06-03 20:58:40,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:40,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:40,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-06-03 20:58:40,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:42,026 INFO L124 PetriNetUnfolderBase]: 7030/11451 cut-off events. [2024-06-03 20:58:42,026 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-06-03 20:58:42,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21809 conditions, 11451 events. 7030/11451 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 76035 event pairs, 5464 based on Foata normal form. 1/11147 useless extension candidates. Maximal degree in co-relation 21794. Up to 10125 conditions per place. [2024-06-03 20:58:42,081 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 46 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2024-06-03 20:58:42,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 241 flow [2024-06-03 20:58:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:58:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:58:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-03 20:58:42,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683060109289617 [2024-06-03 20:58:42,092 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 115 flow. Second operand 3 states and 104 transitions. [2024-06-03 20:58:42,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 241 flow [2024-06-03 20:58:42,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 20:58:42,096 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 142 flow [2024-06-03 20:58:42,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-06-03 20:58:42,100 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2024-06-03 20:58:42,100 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 142 flow [2024-06-03 20:58:42,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:42,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:42,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:42,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 20:58:42,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:42,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash -192433082, now seen corresponding path program 1 times [2024-06-03 20:58:42,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:42,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708470087] [2024-06-03 20:58:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:42,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:42,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:42,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708470087] [2024-06-03 20:58:42,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708470087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:42,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:42,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:58:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173905034] [2024-06-03 20:58:42,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:42,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:58:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:58:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:58:42,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-06-03 20:58:42,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2024-06-03 20:58:42,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:42,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-06-03 20:58:42,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:44,177 INFO L124 PetriNetUnfolderBase]: 7838/12688 cut-off events. [2024-06-03 20:58:44,177 INFO L125 PetriNetUnfolderBase]: For 1892/1892 co-relation queries the response was YES. [2024-06-03 20:58:44,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26306 conditions, 12688 events. 7838/12688 cut-off events. For 1892/1892 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 83698 event pairs, 5420 based on Foata normal form. 6/12546 useless extension candidates. Maximal degree in co-relation 26291. Up to 11140 conditions per place. [2024-06-03 20:58:44,261 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 62 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-06-03 20:58:44,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 364 flow [2024-06-03 20:58:44,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:58:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:58:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-06-03 20:58:44,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614754098360656 [2024-06-03 20:58:44,266 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 142 flow. Second operand 4 states and 137 transitions. [2024-06-03 20:58:44,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 364 flow [2024-06-03 20:58:44,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 84 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:58:44,269 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 204 flow [2024-06-03 20:58:44,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-03 20:58:44,270 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2024-06-03 20:58:44,270 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 204 flow [2024-06-03 20:58:44,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2024-06-03 20:58:44,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:44,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:44,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 20:58:44,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:44,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:44,273 INFO L85 PathProgramCache]: Analyzing trace with hash 973527468, now seen corresponding path program 1 times [2024-06-03 20:58:44,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:44,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062589218] [2024-06-03 20:58:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:44,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:45,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:45,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062589218] [2024-06-03 20:58:45,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062589218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:45,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:45,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:58:45,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625864387] [2024-06-03 20:58:45,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:45,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:58:45,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:58:45,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:58:45,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-06-03 20:58:45,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:45,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:45,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-06-03 20:58:45,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:46,844 INFO L124 PetriNetUnfolderBase]: 8470/13698 cut-off events. [2024-06-03 20:58:46,845 INFO L125 PetriNetUnfolderBase]: For 6069/6069 co-relation queries the response was YES. [2024-06-03 20:58:46,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30807 conditions, 13698 events. 8470/13698 cut-off events. For 6069/6069 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 92046 event pairs, 6105 based on Foata normal form. 2/13422 useless extension candidates. Maximal degree in co-relation 30789. Up to 12108 conditions per place. [2024-06-03 20:58:46,901 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 55 selfloop transitions, 8 changer transitions 0/76 dead transitions. [2024-06-03 20:58:46,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 76 transitions, 370 flow [2024-06-03 20:58:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:58:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:58:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-03 20:58:46,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081967213114754 [2024-06-03 20:58:46,905 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 204 flow. Second operand 4 states and 124 transitions. [2024-06-03 20:58:46,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 76 transitions, 370 flow [2024-06-03 20:58:46,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 76 transitions, 366 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-03 20:58:46,910 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 244 flow [2024-06-03 20:58:46,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-06-03 20:58:46,911 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 8 predicate places. [2024-06-03 20:58:46,911 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 244 flow [2024-06-03 20:58:46,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:46,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:46,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:46,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 20:58:46,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:46,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:46,913 INFO L85 PathProgramCache]: Analyzing trace with hash 114569047, now seen corresponding path program 1 times [2024-06-03 20:58:46,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:46,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647414054] [2024-06-03 20:58:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:46,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:47,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:47,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647414054] [2024-06-03 20:58:47,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647414054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:47,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:47,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:58:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592575598] [2024-06-03 20:58:47,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:47,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:58:47,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:58:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:58:48,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-06-03 20:58:48,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:48,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:48,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-06-03 20:58:48,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:49,337 INFO L124 PetriNetUnfolderBase]: 8594/13894 cut-off events. [2024-06-03 20:58:49,338 INFO L125 PetriNetUnfolderBase]: For 11554/11554 co-relation queries the response was YES. [2024-06-03 20:58:49,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33711 conditions, 13894 events. 8594/13894 cut-off events. For 11554/11554 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 91572 event pairs, 5552 based on Foata normal form. 4/13744 useless extension candidates. Maximal degree in co-relation 33688. Up to 12053 conditions per place. [2024-06-03 20:58:49,412 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 71 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2024-06-03 20:58:49,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 103 transitions, 572 flow [2024-06-03 20:58:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:58:49,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:58:49,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-03 20:58:49,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245901639344263 [2024-06-03 20:58:49,414 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 244 flow. Second operand 5 states and 160 transitions. [2024-06-03 20:58:49,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 103 transitions, 572 flow [2024-06-03 20:58:49,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 103 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:58:49,421 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 356 flow [2024-06-03 20:58:49,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2024-06-03 20:58:49,422 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2024-06-03 20:58:49,423 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 356 flow [2024-06-03 20:58:49,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:49,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:49,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:49,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 20:58:49,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:49,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:49,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1220264580, now seen corresponding path program 1 times [2024-06-03 20:58:49,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:49,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080552050] [2024-06-03 20:58:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:49,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:50,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:50,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080552050] [2024-06-03 20:58:50,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080552050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:50,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:50,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:58:50,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822290348] [2024-06-03 20:58:50,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:50,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:58:50,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:58:50,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:58:50,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 61 [2024-06-03 20:58:50,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:50,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:50,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 61 [2024-06-03 20:58:50,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:52,105 INFO L124 PetriNetUnfolderBase]: 10457/16000 cut-off events. [2024-06-03 20:58:52,105 INFO L125 PetriNetUnfolderBase]: For 22455/22465 co-relation queries the response was YES. [2024-06-03 20:58:52,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42679 conditions, 16000 events. 10457/16000 cut-off events. For 22455/22465 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 98652 event pairs, 5021 based on Foata normal form. 25/15824 useless extension candidates. Maximal degree in co-relation 42652. Up to 14852 conditions per place. [2024-06-03 20:58:52,167 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 82 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2024-06-03 20:58:52,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 625 flow [2024-06-03 20:58:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:58:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:58:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-03 20:58:52,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852459016393443 [2024-06-03 20:58:52,169 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 356 flow. Second operand 5 states and 148 transitions. [2024-06-03 20:58:52,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 625 flow [2024-06-03 20:58:52,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 103 transitions, 623 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-03 20:58:52,180 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 413 flow [2024-06-03 20:58:52,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-06-03 20:58:52,182 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 18 predicate places. [2024-06-03 20:58:52,182 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 413 flow [2024-06-03 20:58:52,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:52,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:52,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:52,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 20:58:52,187 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:52,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash 114581137, now seen corresponding path program 2 times [2024-06-03 20:58:52,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:52,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080594137] [2024-06-03 20:58:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:52,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:52,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:52,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080594137] [2024-06-03 20:58:52,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080594137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:52,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:52,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:58:52,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272766243] [2024-06-03 20:58:52,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:52,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:58:53,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:53,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:58:53,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:58:53,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-06-03 20:58:53,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 413 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:53,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:53,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-06-03 20:58:53,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:54,345 INFO L124 PetriNetUnfolderBase]: 8610/13620 cut-off events. [2024-06-03 20:58:54,345 INFO L125 PetriNetUnfolderBase]: For 25400/25410 co-relation queries the response was YES. [2024-06-03 20:58:54,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37927 conditions, 13620 events. 8610/13620 cut-off events. For 25400/25410 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 88159 event pairs, 3885 based on Foata normal form. 22/13503 useless extension candidates. Maximal degree in co-relation 37896. Up to 12086 conditions per place. [2024-06-03 20:58:54,412 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 73 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-03 20:58:54,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 110 transitions, 728 flow [2024-06-03 20:58:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:58:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:58:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-06-03 20:58:54,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377049180327869 [2024-06-03 20:58:54,414 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 413 flow. Second operand 5 states and 164 transitions. [2024-06-03 20:58:54,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 110 transitions, 728 flow [2024-06-03 20:58:54,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 700 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-03 20:58:54,423 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 494 flow [2024-06-03 20:58:54,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2024-06-03 20:58:54,425 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 22 predicate places. [2024-06-03 20:58:54,425 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 494 flow [2024-06-03 20:58:54,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:54,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:54,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:54,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 20:58:54,426 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:54,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 114581571, now seen corresponding path program 1 times [2024-06-03 20:58:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:54,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354478216] [2024-06-03 20:58:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:54,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:55,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:55,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354478216] [2024-06-03 20:58:55,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354478216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:55,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:55,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:58:55,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425624962] [2024-06-03 20:58:55,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:55,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:58:55,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:55,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:58:55,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:58:55,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2024-06-03 20:58:55,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:55,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:55,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2024-06-03 20:58:55,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:57,198 INFO L124 PetriNetUnfolderBase]: 10071/16129 cut-off events. [2024-06-03 20:58:57,198 INFO L125 PetriNetUnfolderBase]: For 38148/38162 co-relation queries the response was YES. [2024-06-03 20:58:57,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45779 conditions, 16129 events. 10071/16129 cut-off events. For 38148/38162 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 105866 event pairs, 6713 based on Foata normal form. 2/15940 useless extension candidates. Maximal degree in co-relation 45744. Up to 14509 conditions per place. [2024-06-03 20:58:57,301 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 72 selfloop transitions, 10 changer transitions 0/95 dead transitions. [2024-06-03 20:58:57,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 95 transitions, 704 flow [2024-06-03 20:58:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:58:57,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:58:57,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-03 20:58:57,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48770491803278687 [2024-06-03 20:58:57,302 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 494 flow. Second operand 4 states and 119 transitions. [2024-06-03 20:58:57,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 95 transitions, 704 flow [2024-06-03 20:58:57,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 95 transitions, 666 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-03 20:58:57,322 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 512 flow [2024-06-03 20:58:57,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=512, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-06-03 20:58:57,323 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 24 predicate places. [2024-06-03 20:58:57,323 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 512 flow [2024-06-03 20:58:57,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:57,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:57,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:57,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 20:58:57,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:57,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash -743325704, now seen corresponding path program 1 times [2024-06-03 20:58:57,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:57,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474424399] [2024-06-03 20:58:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:57,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:58,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:58,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474424399] [2024-06-03 20:58:58,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474424399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:58,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:58,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:58:58,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922122617] [2024-06-03 20:58:58,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:58,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:58:58,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:58,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:58:58,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:58:58,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 61 [2024-06-03 20:58:58,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 512 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:58,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:58,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 61 [2024-06-03 20:58:58,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:59,795 INFO L124 PetriNetUnfolderBase]: 10454/16539 cut-off events. [2024-06-03 20:58:59,795 INFO L125 PetriNetUnfolderBase]: For 51386/51400 co-relation queries the response was YES. [2024-06-03 20:58:59,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49788 conditions, 16539 events. 10454/16539 cut-off events. For 51386/51400 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 106608 event pairs, 6331 based on Foata normal form. 6/16382 useless extension candidates. Maximal degree in co-relation 49750. Up to 14878 conditions per place. [2024-06-03 20:58:59,890 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 94 selfloop transitions, 24 changer transitions 0/127 dead transitions. [2024-06-03 20:58:59,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 127 transitions, 979 flow [2024-06-03 20:58:59,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:58:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:58:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-03 20:58:59,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46174863387978143 [2024-06-03 20:58:59,891 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 512 flow. Second operand 6 states and 169 transitions. [2024-06-03 20:58:59,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 127 transitions, 979 flow [2024-06-03 20:58:59,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 127 transitions, 967 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:58:59,911 INFO L231 Difference]: Finished difference. Result has 93 places, 100 transitions, 721 flow [2024-06-03 20:58:59,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=721, PETRI_PLACES=93, PETRI_TRANSITIONS=100} [2024-06-03 20:58:59,912 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 30 predicate places. [2024-06-03 20:58:59,912 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 100 transitions, 721 flow [2024-06-03 20:58:59,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:58:59,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:59,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:59,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 20:58:59,913 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:59,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:59,913 INFO L85 PathProgramCache]: Analyzing trace with hash -725956559, now seen corresponding path program 1 times [2024-06-03 20:58:59,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:59,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804221469] [2024-06-03 20:58:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:59,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:01,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:01,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804221469] [2024-06-03 20:59:01,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804221469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:01,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:01,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:59:01,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877467093] [2024-06-03 20:59:01,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:01,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:59:01,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:59:01,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:59:01,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 61 [2024-06-03 20:59:01,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 100 transitions, 721 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:01,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:01,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 61 [2024-06-03 20:59:01,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:02,746 INFO L124 PetriNetUnfolderBase]: 11790/18288 cut-off events. [2024-06-03 20:59:02,746 INFO L125 PetriNetUnfolderBase]: For 90642/90656 co-relation queries the response was YES. [2024-06-03 20:59:02,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60299 conditions, 18288 events. 11790/18288 cut-off events. For 90642/90656 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 114441 event pairs, 7742 based on Foata normal form. 2/18155 useless extension candidates. Maximal degree in co-relation 60258. Up to 17038 conditions per place. [2024-06-03 20:59:02,866 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 86 selfloop transitions, 12 changer transitions 0/114 dead transitions. [2024-06-03 20:59:02,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 114 transitions, 969 flow [2024-06-03 20:59:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:59:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:59:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-03 20:59:02,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47950819672131145 [2024-06-03 20:59:02,868 INFO L175 Difference]: Start difference. First operand has 93 places, 100 transitions, 721 flow. Second operand 4 states and 117 transitions. [2024-06-03 20:59:02,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 114 transitions, 969 flow [2024-06-03 20:59:02,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 114 transitions, 933 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-03 20:59:02,904 INFO L231 Difference]: Finished difference. Result has 96 places, 103 transitions, 753 flow [2024-06-03 20:59:02,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=753, PETRI_PLACES=96, PETRI_TRANSITIONS=103} [2024-06-03 20:59:02,905 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 33 predicate places. [2024-06-03 20:59:02,905 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 103 transitions, 753 flow [2024-06-03 20:59:02,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:02,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:02,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:02,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 20:59:02,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:02,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash -742937894, now seen corresponding path program 2 times [2024-06-03 20:59:02,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:02,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185144682] [2024-06-03 20:59:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:02,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:03,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185144682] [2024-06-03 20:59:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185144682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:03,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:03,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:59:03,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842833832] [2024-06-03 20:59:03,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:03,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:59:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:03,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:59:03,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:59:03,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 61 [2024-06-03 20:59:03,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 103 transitions, 753 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:03,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:03,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 61 [2024-06-03 20:59:03,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:05,607 INFO L124 PetriNetUnfolderBase]: 10618/16828 cut-off events. [2024-06-03 20:59:05,608 INFO L125 PetriNetUnfolderBase]: For 97172/97186 co-relation queries the response was YES. [2024-06-03 20:59:05,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57917 conditions, 16828 events. 10618/16828 cut-off events. For 97172/97186 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 108569 event pairs, 6311 based on Foata normal form. 6/16665 useless extension candidates. Maximal degree in co-relation 57872. Up to 14956 conditions per place. [2024-06-03 20:59:05,682 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 102 selfloop transitions, 38 changer transitions 0/149 dead transitions. [2024-06-03 20:59:05,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 149 transitions, 1290 flow [2024-06-03 20:59:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:59:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:59:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-03 20:59:05,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496487119437939 [2024-06-03 20:59:05,684 INFO L175 Difference]: Start difference. First operand has 96 places, 103 transitions, 753 flow. Second operand 7 states and 192 transitions. [2024-06-03 20:59:05,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 149 transitions, 1290 flow [2024-06-03 20:59:05,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 149 transitions, 1268 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-03 20:59:05,715 INFO L231 Difference]: Finished difference. Result has 103 places, 116 transitions, 983 flow [2024-06-03 20:59:05,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=983, PETRI_PLACES=103, PETRI_TRANSITIONS=116} [2024-06-03 20:59:05,716 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 40 predicate places. [2024-06-03 20:59:05,716 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 116 transitions, 983 flow [2024-06-03 20:59:05,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:05,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:05,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:05,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 20:59:05,717 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:05,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:05,717 INFO L85 PathProgramCache]: Analyzing trace with hash -685271262, now seen corresponding path program 1 times [2024-06-03 20:59:05,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:05,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182916271] [2024-06-03 20:59:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:05,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:06,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:06,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182916271] [2024-06-03 20:59:06,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182916271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:06,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:06,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:59:06,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139636094] [2024-06-03 20:59:06,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:06,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:59:06,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:59:06,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:59:06,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 61 [2024-06-03 20:59:06,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 116 transitions, 983 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:06,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:06,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 61 [2024-06-03 20:59:06,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:08,712 INFO L124 PetriNetUnfolderBase]: 12500/19183 cut-off events. [2024-06-03 20:59:08,712 INFO L125 PetriNetUnfolderBase]: For 164263/164287 co-relation queries the response was YES. [2024-06-03 20:59:08,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72685 conditions, 19183 events. 12500/19183 cut-off events. For 164263/164287 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 118143 event pairs, 7643 based on Foata normal form. 44/19080 useless extension candidates. Maximal degree in co-relation 72636. Up to 17435 conditions per place. [2024-06-03 20:59:08,851 INFO L140 encePairwiseOnDemand]: 48/61 looper letters, 111 selfloop transitions, 53 changer transitions 0/175 dead transitions. [2024-06-03 20:59:08,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 175 transitions, 1742 flow [2024-06-03 20:59:08,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:59:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:59:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-03 20:59:08,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40749414519906324 [2024-06-03 20:59:08,853 INFO L175 Difference]: Start difference. First operand has 103 places, 116 transitions, 983 flow. Second operand 7 states and 174 transitions. [2024-06-03 20:59:08,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 175 transitions, 1742 flow [2024-06-03 20:59:08,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 175 transitions, 1639 flow, removed 45 selfloop flow, removed 1 redundant places. [2024-06-03 20:59:08,959 INFO L231 Difference]: Finished difference. Result has 112 places, 142 transitions, 1374 flow [2024-06-03 20:59:08,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1374, PETRI_PLACES=112, PETRI_TRANSITIONS=142} [2024-06-03 20:59:08,959 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 49 predicate places. [2024-06-03 20:59:08,959 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 142 transitions, 1374 flow [2024-06-03 20:59:08,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:08,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:08,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:08,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 20:59:08,960 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:08,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1556222622, now seen corresponding path program 1 times [2024-06-03 20:59:08,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:08,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389950399] [2024-06-03 20:59:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:08,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:10,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:10,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389950399] [2024-06-03 20:59:10,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389950399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:10,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:10,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:59:10,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874407962] [2024-06-03 20:59:10,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:10,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:59:10,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:10,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:59:10,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:59:10,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 61 [2024-06-03 20:59:10,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 142 transitions, 1374 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:10,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:10,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 61 [2024-06-03 20:59:10,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:12,403 INFO L124 PetriNetUnfolderBase]: 13095/20048 cut-off events. [2024-06-03 20:59:12,403 INFO L125 PetriNetUnfolderBase]: For 254935/254985 co-relation queries the response was YES. [2024-06-03 20:59:12,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83443 conditions, 20048 events. 13095/20048 cut-off events. For 254935/254985 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 122734 event pairs, 10284 based on Foata normal form. 9/19909 useless extension candidates. Maximal degree in co-relation 83387. Up to 18912 conditions per place. [2024-06-03 20:59:12,569 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 126 selfloop transitions, 16 changer transitions 0/159 dead transitions. [2024-06-03 20:59:12,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 159 transitions, 1726 flow [2024-06-03 20:59:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:59:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:59:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-03 20:59:12,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39617486338797814 [2024-06-03 20:59:12,571 INFO L175 Difference]: Start difference. First operand has 112 places, 142 transitions, 1374 flow. Second operand 6 states and 145 transitions. [2024-06-03 20:59:12,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 159 transitions, 1726 flow [2024-06-03 20:59:12,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 159 transitions, 1661 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-03 20:59:12,712 INFO L231 Difference]: Finished difference. Result has 115 places, 145 transitions, 1387 flow [2024-06-03 20:59:12,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1387, PETRI_PLACES=115, PETRI_TRANSITIONS=145} [2024-06-03 20:59:12,712 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 52 predicate places. [2024-06-03 20:59:12,712 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 145 transitions, 1387 flow [2024-06-03 20:59:12,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:12,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:12,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:12,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 20:59:12,713 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:12,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:12,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1571139959, now seen corresponding path program 1 times [2024-06-03 20:59:12,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:12,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915017571] [2024-06-03 20:59:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:12,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:13,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:13,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915017571] [2024-06-03 20:59:13,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915017571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:13,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:13,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:59:13,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619317857] [2024-06-03 20:59:13,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:13,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:59:13,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:13,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:59:13,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:59:13,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-06-03 20:59:13,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 145 transitions, 1387 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:13,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:13,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-06-03 20:59:13,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:15,222 INFO L124 PetriNetUnfolderBase]: 9612/15761 cut-off events. [2024-06-03 20:59:15,222 INFO L125 PetriNetUnfolderBase]: For 177832/177881 co-relation queries the response was YES. [2024-06-03 20:59:15,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64694 conditions, 15761 events. 9612/15761 cut-off events. For 177832/177881 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 106280 event pairs, 7234 based on Foata normal form. 8/15579 useless extension candidates. Maximal degree in co-relation 64637. Up to 13952 conditions per place. [2024-06-03 20:59:15,351 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 130 selfloop transitions, 12 changer transitions 0/164 dead transitions. [2024-06-03 20:59:15,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 164 transitions, 1769 flow [2024-06-03 20:59:15,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:59:15,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:59:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-03 20:59:15,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204918032786885 [2024-06-03 20:59:15,352 INFO L175 Difference]: Start difference. First operand has 115 places, 145 transitions, 1387 flow. Second operand 4 states and 127 transitions. [2024-06-03 20:59:15,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 164 transitions, 1769 flow [2024-06-03 20:59:15,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 164 transitions, 1697 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-03 20:59:15,437 INFO L231 Difference]: Finished difference. Result has 116 places, 151 transitions, 1404 flow [2024-06-03 20:59:15,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1404, PETRI_PLACES=116, PETRI_TRANSITIONS=151} [2024-06-03 20:59:15,437 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 53 predicate places. [2024-06-03 20:59:15,438 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 151 transitions, 1404 flow [2024-06-03 20:59:15,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:15,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:15,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:15,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 20:59:15,438 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:15,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash 231428555, now seen corresponding path program 1 times [2024-06-03 20:59:15,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:15,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828501876] [2024-06-03 20:59:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:15,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:16,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:16,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828501876] [2024-06-03 20:59:16,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828501876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:16,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:16,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:59:16,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577117046] [2024-06-03 20:59:16,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:16,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:59:16,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:16,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:59:16,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:59:16,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 61 [2024-06-03 20:59:16,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 151 transitions, 1404 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:16,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:16,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 61 [2024-06-03 20:59:16,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:19,490 INFO L124 PetriNetUnfolderBase]: 18228/27708 cut-off events. [2024-06-03 20:59:19,490 INFO L125 PetriNetUnfolderBase]: For 417015/417055 co-relation queries the response was YES. [2024-06-03 20:59:19,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109279 conditions, 27708 events. 18228/27708 cut-off events. For 417015/417055 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 176689 event pairs, 11099 based on Foata normal form. 1028/28517 useless extension candidates. Maximal degree in co-relation 109220. Up to 19209 conditions per place. [2024-06-03 20:59:19,762 INFO L140 encePairwiseOnDemand]: 48/61 looper letters, 113 selfloop transitions, 46 changer transitions 46/216 dead transitions. [2024-06-03 20:59:19,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 216 transitions, 2102 flow [2024-06-03 20:59:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:59:19,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:59:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-03 20:59:19,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39162112932604737 [2024-06-03 20:59:19,764 INFO L175 Difference]: Start difference. First operand has 116 places, 151 transitions, 1404 flow. Second operand 9 states and 215 transitions. [2024-06-03 20:59:19,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 216 transitions, 2102 flow [2024-06-03 20:59:19,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 216 transitions, 2100 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-03 20:59:19,956 INFO L231 Difference]: Finished difference. Result has 126 places, 141 transitions, 1410 flow [2024-06-03 20:59:19,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1410, PETRI_PLACES=126, PETRI_TRANSITIONS=141} [2024-06-03 20:59:19,957 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 63 predicate places. [2024-06-03 20:59:19,957 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 141 transitions, 1410 flow [2024-06-03 20:59:19,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:19,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:19,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:19,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 20:59:19,958 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:19,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash 216511218, now seen corresponding path program 1 times [2024-06-03 20:59:19,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:19,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452650781] [2024-06-03 20:59:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:19,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:21,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:21,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452650781] [2024-06-03 20:59:21,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452650781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:21,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:21,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:59:21,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063920701] [2024-06-03 20:59:21,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:21,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:59:21,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:21,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:59:21,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:59:21,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2024-06-03 20:59:21,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 141 transitions, 1410 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:21,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:21,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2024-06-03 20:59:21,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:23,073 INFO L124 PetriNetUnfolderBase]: 9935/16046 cut-off events. [2024-06-03 20:59:23,073 INFO L125 PetriNetUnfolderBase]: For 254601/254681 co-relation queries the response was YES. [2024-06-03 20:59:23,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72847 conditions, 16046 events. 9935/16046 cut-off events. For 254601/254681 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 105868 event pairs, 4148 based on Foata normal form. 26/15874 useless extension candidates. Maximal degree in co-relation 72783. Up to 13822 conditions per place. [2024-06-03 20:59:23,254 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 138 selfloop transitions, 25 changer transitions 0/179 dead transitions. [2024-06-03 20:59:23,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 179 transitions, 1926 flow [2024-06-03 20:59:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:59:23,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:59:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-03 20:59:23,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426229508196721 [2024-06-03 20:59:23,257 INFO L175 Difference]: Start difference. First operand has 126 places, 141 transitions, 1410 flow. Second operand 7 states and 189 transitions. [2024-06-03 20:59:23,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 179 transitions, 1926 flow [2024-06-03 20:59:23,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1801 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-03 20:59:23,464 INFO L231 Difference]: Finished difference. Result has 125 places, 147 transitions, 1408 flow [2024-06-03 20:59:23,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1408, PETRI_PLACES=125, PETRI_TRANSITIONS=147} [2024-06-03 20:59:23,467 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 62 predicate places. [2024-06-03 20:59:23,467 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 147 transitions, 1408 flow [2024-06-03 20:59:23,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:23,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:23,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:23,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 20:59:23,468 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:23,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:23,468 INFO L85 PathProgramCache]: Analyzing trace with hash -998259798, now seen corresponding path program 1 times [2024-06-03 20:59:23,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:23,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191585993] [2024-06-03 20:59:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:23,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:25,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:25,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191585993] [2024-06-03 20:59:25,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191585993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:25,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:25,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:59:25,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647911569] [2024-06-03 20:59:25,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:25,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:59:25,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:25,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:59:25,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:59:25,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 61 [2024-06-03 20:59:25,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 147 transitions, 1408 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:25,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:25,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 61 [2024-06-03 20:59:25,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:27,753 INFO L124 PetriNetUnfolderBase]: 13314/20235 cut-off events. [2024-06-03 20:59:27,754 INFO L125 PetriNetUnfolderBase]: For 347572/347828 co-relation queries the response was YES. [2024-06-03 20:59:27,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94620 conditions, 20235 events. 13314/20235 cut-off events. For 347572/347828 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 122549 event pairs, 10615 based on Foata normal form. 16/20063 useless extension candidates. Maximal degree in co-relation 94556. Up to 19148 conditions per place. [2024-06-03 20:59:27,948 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 131 selfloop transitions, 18 changer transitions 0/168 dead transitions. [2024-06-03 20:59:27,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 168 transitions, 1790 flow [2024-06-03 20:59:27,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:59:27,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:59:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-03 20:59:27,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4098360655737705 [2024-06-03 20:59:27,950 INFO L175 Difference]: Start difference. First operand has 125 places, 147 transitions, 1408 flow. Second operand 6 states and 150 transitions. [2024-06-03 20:59:27,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 168 transitions, 1790 flow [2024-06-03 20:59:28,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 168 transitions, 1750 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-03 20:59:28,090 INFO L231 Difference]: Finished difference. Result has 128 places, 150 transitions, 1458 flow [2024-06-03 20:59:28,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1458, PETRI_PLACES=128, PETRI_TRANSITIONS=150} [2024-06-03 20:59:28,091 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 65 predicate places. [2024-06-03 20:59:28,091 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 150 transitions, 1458 flow [2024-06-03 20:59:28,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:28,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:28,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:28,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 20:59:28,099 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:28,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:28,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1875384553, now seen corresponding path program 1 times [2024-06-03 20:59:28,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:28,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331359882] [2024-06-03 20:59:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:28,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:29,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:29,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331359882] [2024-06-03 20:59:29,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331359882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:29,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:29,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:59:29,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798274872] [2024-06-03 20:59:29,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:29,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:59:29,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:59:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:59:29,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2024-06-03 20:59:29,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 150 transitions, 1458 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:29,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:29,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2024-06-03 20:59:29,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:30,908 INFO L124 PetriNetUnfolderBase]: 9773/16123 cut-off events. [2024-06-03 20:59:30,908 INFO L125 PetriNetUnfolderBase]: For 266852/266940 co-relation queries the response was YES. [2024-06-03 20:59:31,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74569 conditions, 16123 events. 9773/16123 cut-off events. For 266852/266940 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 108494 event pairs, 7747 based on Foata normal form. 9/16033 useless extension candidates. Maximal degree in co-relation 74503. Up to 14113 conditions per place. [2024-06-03 20:59:31,072 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 130 selfloop transitions, 19 changer transitions 0/169 dead transitions. [2024-06-03 20:59:31,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 169 transitions, 1878 flow [2024-06-03 20:59:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:59:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:59:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-06-03 20:59:31,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4491803278688525 [2024-06-03 20:59:31,092 INFO L175 Difference]: Start difference. First operand has 128 places, 150 transitions, 1458 flow. Second operand 5 states and 137 transitions. [2024-06-03 20:59:31,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 169 transitions, 1878 flow [2024-06-03 20:59:31,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 169 transitions, 1812 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-03 20:59:31,270 INFO L231 Difference]: Finished difference. Result has 130 places, 156 transitions, 1518 flow [2024-06-03 20:59:31,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1518, PETRI_PLACES=130, PETRI_TRANSITIONS=156} [2024-06-03 20:59:31,271 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 67 predicate places. [2024-06-03 20:59:31,271 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 156 transitions, 1518 flow [2024-06-03 20:59:31,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:31,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:31,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:31,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 20:59:31,271 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:31,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash 695448865, now seen corresponding path program 1 times [2024-06-03 20:59:31,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:31,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711016518] [2024-06-03 20:59:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:31,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:32,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:32,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711016518] [2024-06-03 20:59:32,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711016518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:32,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:32,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:59:32,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091404006] [2024-06-03 20:59:32,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:32,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:59:32,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:32,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:59:32,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:59:32,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 61 [2024-06-03 20:59:32,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 156 transitions, 1518 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:32,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:32,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 61 [2024-06-03 20:59:32,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:34,363 INFO L124 PetriNetUnfolderBase]: 11817/18374 cut-off events. [2024-06-03 20:59:34,363 INFO L125 PetriNetUnfolderBase]: For 354090/354292 co-relation queries the response was YES. [2024-06-03 20:59:34,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90162 conditions, 18374 events. 11817/18374 cut-off events. For 354090/354292 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 115526 event pairs, 5485 based on Foata normal form. 20/18272 useless extension candidates. Maximal degree in co-relation 90093. Up to 16633 conditions per place. [2024-06-03 20:59:34,510 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 162 selfloop transitions, 27 changer transitions 0/200 dead transitions. [2024-06-03 20:59:34,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 200 transitions, 2122 flow [2024-06-03 20:59:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:59:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:59:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-03 20:59:34,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405152224824356 [2024-06-03 20:59:34,513 INFO L175 Difference]: Start difference. First operand has 130 places, 156 transitions, 1518 flow. Second operand 7 states and 173 transitions. [2024-06-03 20:59:34,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 200 transitions, 2122 flow [2024-06-03 20:59:34,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 200 transitions, 2097 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-03 20:59:34,740 INFO L231 Difference]: Finished difference. Result has 137 places, 168 transitions, 1713 flow [2024-06-03 20:59:34,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1713, PETRI_PLACES=137, PETRI_TRANSITIONS=168} [2024-06-03 20:59:34,740 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 74 predicate places. [2024-06-03 20:59:34,741 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 168 transitions, 1713 flow [2024-06-03 20:59:34,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:34,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:34,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:34,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 20:59:34,741 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:34,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1932108437, now seen corresponding path program 1 times [2024-06-03 20:59:34,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:34,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681110107] [2024-06-03 20:59:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:34,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:36,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:36,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681110107] [2024-06-03 20:59:36,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681110107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:36,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:36,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:59:36,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79412835] [2024-06-03 20:59:36,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:36,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:59:36,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:59:36,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:59:36,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 61 [2024-06-03 20:59:36,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 168 transitions, 1713 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:36,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:36,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 61 [2024-06-03 20:59:36,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:39,478 INFO L124 PetriNetUnfolderBase]: 17022/25759 cut-off events. [2024-06-03 20:59:39,479 INFO L125 PetriNetUnfolderBase]: For 647699/648365 co-relation queries the response was YES. [2024-06-03 20:59:39,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117182 conditions, 25759 events. 17022/25759 cut-off events. For 647699/648365 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 163680 event pairs, 8609 based on Foata normal form. 964/26489 useless extension candidates. Maximal degree in co-relation 117109. Up to 17954 conditions per place. [2024-06-03 20:59:39,758 INFO L140 encePairwiseOnDemand]: 48/61 looper letters, 149 selfloop transitions, 52 changer transitions 38/249 dead transitions. [2024-06-03 20:59:39,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 249 transitions, 2549 flow [2024-06-03 20:59:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:59:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:59:39,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 262 transitions. [2024-06-03 20:59:39,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39046199701937406 [2024-06-03 20:59:39,761 INFO L175 Difference]: Start difference. First operand has 137 places, 168 transitions, 1713 flow. Second operand 11 states and 262 transitions. [2024-06-03 20:59:39,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 249 transitions, 2549 flow [2024-06-03 20:59:40,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 249 transitions, 2483 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-03 20:59:40,036 INFO L231 Difference]: Finished difference. Result has 148 places, 166 transitions, 1802 flow [2024-06-03 20:59:40,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1802, PETRI_PLACES=148, PETRI_TRANSITIONS=166} [2024-06-03 20:59:40,037 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 85 predicate places. [2024-06-03 20:59:40,037 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 166 transitions, 1802 flow [2024-06-03 20:59:40,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:40,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:40,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:40,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 20:59:40,038 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:40,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:40,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1931820137, now seen corresponding path program 2 times [2024-06-03 20:59:40,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:40,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928431579] [2024-06-03 20:59:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:40,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:41,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:41,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928431579] [2024-06-03 20:59:41,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928431579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:41,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:41,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:59:41,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509259752] [2024-06-03 20:59:41,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:41,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:59:41,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:41,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:59:41,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:59:41,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 61 [2024-06-03 20:59:41,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 166 transitions, 1802 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:41,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:41,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 61 [2024-06-03 20:59:41,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:45,347 INFO L124 PetriNetUnfolderBase]: 16534/25032 cut-off events. [2024-06-03 20:59:45,348 INFO L125 PetriNetUnfolderBase]: For 811242/811908 co-relation queries the response was YES. [2024-06-03 20:59:45,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121847 conditions, 25032 events. 16534/25032 cut-off events. For 811242/811908 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 158242 event pairs, 8516 based on Foata normal form. 881/25679 useless extension candidates. Maximal degree in co-relation 121770. Up to 17889 conditions per place. [2024-06-03 20:59:45,533 INFO L140 encePairwiseOnDemand]: 48/61 looper letters, 139 selfloop transitions, 50 changer transitions 30/229 dead transitions. [2024-06-03 20:59:45,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 229 transitions, 2529 flow [2024-06-03 20:59:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:59:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:59:45,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-03 20:59:45,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3989071038251366 [2024-06-03 20:59:45,535 INFO L175 Difference]: Start difference. First operand has 148 places, 166 transitions, 1802 flow. Second operand 9 states and 219 transitions. [2024-06-03 20:59:45,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 229 transitions, 2529 flow [2024-06-03 20:59:45,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 229 transitions, 2374 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-03 20:59:45,891 INFO L231 Difference]: Finished difference. Result has 150 places, 168 transitions, 1810 flow [2024-06-03 20:59:45,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1810, PETRI_PLACES=150, PETRI_TRANSITIONS=168} [2024-06-03 20:59:45,892 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 87 predicate places. [2024-06-03 20:59:45,892 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 168 transitions, 1810 flow [2024-06-03 20:59:45,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:45,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:45,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:45,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 20:59:45,893 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:45,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:45,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1878096500, now seen corresponding path program 1 times [2024-06-03 20:59:45,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:45,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751635] [2024-06-03 20:59:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:45,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:46,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:46,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751635] [2024-06-03 20:59:46,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:46,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:46,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:59:46,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829690607] [2024-06-03 20:59:46,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:46,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:59:46,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:59:46,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:59:46,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 61 [2024-06-03 20:59:46,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 168 transitions, 1810 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:46,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:46,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 61 [2024-06-03 20:59:46,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:49,268 INFO L124 PetriNetUnfolderBase]: 10160/16214 cut-off events. [2024-06-03 20:59:49,269 INFO L125 PetriNetUnfolderBase]: For 454253/454277 co-relation queries the response was YES. [2024-06-03 20:59:49,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87365 conditions, 16214 events. 10160/16214 cut-off events. For 454253/454277 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 104591 event pairs, 4129 based on Foata normal form. 30/16126 useless extension candidates. Maximal degree in co-relation 87288. Up to 13263 conditions per place. [2024-06-03 20:59:49,386 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 151 selfloop transitions, 66 changer transitions 0/230 dead transitions. [2024-06-03 20:59:49,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 230 transitions, 2618 flow [2024-06-03 20:59:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:59:49,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:59:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2024-06-03 20:59:49,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692622950819672 [2024-06-03 20:59:49,387 INFO L175 Difference]: Start difference. First operand has 150 places, 168 transitions, 1810 flow. Second operand 8 states and 229 transitions. [2024-06-03 20:59:49,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 230 transitions, 2618 flow [2024-06-03 20:59:49,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 230 transitions, 2477 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-03 20:59:49,700 INFO L231 Difference]: Finished difference. Result has 151 places, 176 transitions, 1922 flow [2024-06-03 20:59:49,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1922, PETRI_PLACES=151, PETRI_TRANSITIONS=176} [2024-06-03 20:59:49,700 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 88 predicate places. [2024-06-03 20:59:49,701 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 176 transitions, 1922 flow [2024-06-03 20:59:49,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:49,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:49,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:49,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 20:59:49,701 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:49,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:49,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1415648159, now seen corresponding path program 1 times [2024-06-03 20:59:49,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:49,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104119061] [2024-06-03 20:59:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:49,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:51,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:51,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104119061] [2024-06-03 20:59:51,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104119061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:51,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:51,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:59:51,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671627362] [2024-06-03 20:59:51,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:51,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:59:51,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:51,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:59:51,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:59:51,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 61 [2024-06-03 20:59:51,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 176 transitions, 1922 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:51,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:51,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 61 [2024-06-03 20:59:51,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:54,407 INFO L124 PetriNetUnfolderBase]: 14175/21384 cut-off events. [2024-06-03 20:59:54,407 INFO L125 PetriNetUnfolderBase]: For 625540/626044 co-relation queries the response was YES. [2024-06-03 20:59:54,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118210 conditions, 21384 events. 14175/21384 cut-off events. For 625540/626044 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 128698 event pairs, 6129 based on Foata normal form. 104/21347 useless extension candidates. Maximal degree in co-relation 118132. Up to 19192 conditions per place. [2024-06-03 20:59:54,617 INFO L140 encePairwiseOnDemand]: 48/61 looper letters, 146 selfloop transitions, 62 changer transitions 0/223 dead transitions. [2024-06-03 20:59:54,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 223 transitions, 2585 flow [2024-06-03 20:59:54,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:59:54,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:59:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-03 20:59:54,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38934426229508196 [2024-06-03 20:59:54,618 INFO L175 Difference]: Start difference. First operand has 151 places, 176 transitions, 1922 flow. Second operand 8 states and 190 transitions. [2024-06-03 20:59:54,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 223 transitions, 2585 flow [2024-06-03 20:59:55,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 223 transitions, 2460 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-03 20:59:55,065 INFO L231 Difference]: Finished difference. Result has 154 places, 179 transitions, 1984 flow [2024-06-03 20:59:55,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1984, PETRI_PLACES=154, PETRI_TRANSITIONS=179} [2024-06-03 20:59:55,066 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 91 predicate places. [2024-06-03 20:59:55,066 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 179 transitions, 1984 flow [2024-06-03 20:59:55,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:55,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:55,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:55,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 20:59:55,067 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:55,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1878084410, now seen corresponding path program 2 times [2024-06-03 20:59:55,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:55,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820676832] [2024-06-03 20:59:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:55,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:59:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:59:55,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:59:55,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820676832] [2024-06-03 20:59:55,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820676832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:59:55,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:59:55,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:59:55,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798543293] [2024-06-03 20:59:55,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:59:55,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:59:55,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:59:55,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:59:55,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:59:56,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 61 [2024-06-03 20:59:56,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 179 transitions, 1984 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:56,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:59:56,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 61 [2024-06-03 20:59:56,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:59:58,376 INFO L124 PetriNetUnfolderBase]: 10385/16558 cut-off events. [2024-06-03 20:59:58,377 INFO L125 PetriNetUnfolderBase]: For 456064/456110 co-relation queries the response was YES. [2024-06-03 20:59:58,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91251 conditions, 16558 events. 10385/16558 cut-off events. For 456064/456110 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 106966 event pairs, 4309 based on Foata normal form. 44/16459 useless extension candidates. Maximal degree in co-relation 91172. Up to 13665 conditions per place. [2024-06-03 20:59:58,539 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 144 selfloop transitions, 64 changer transitions 0/221 dead transitions. [2024-06-03 20:59:58,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 221 transitions, 2653 flow [2024-06-03 20:59:58,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:59:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:59:58,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-03 20:59:58,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637002341920375 [2024-06-03 20:59:58,541 INFO L175 Difference]: Start difference. First operand has 154 places, 179 transitions, 1984 flow. Second operand 7 states and 198 transitions. [2024-06-03 20:59:58,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 221 transitions, 2653 flow [2024-06-03 20:59:58,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 221 transitions, 2514 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-03 20:59:58,859 INFO L231 Difference]: Finished difference. Result has 156 places, 182 transitions, 2049 flow [2024-06-03 20:59:58,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2049, PETRI_PLACES=156, PETRI_TRANSITIONS=182} [2024-06-03 20:59:58,859 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 93 predicate places. [2024-06-03 20:59:58,859 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 182 transitions, 2049 flow [2024-06-03 20:59:58,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:59:58,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:59:58,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:59:58,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 20:59:58,860 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:59:58,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:59:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1992612296, now seen corresponding path program 1 times [2024-06-03 20:59:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:59:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324766018] [2024-06-03 20:59:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:59:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:59:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:00:00,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:00,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324766018] [2024-06-03 21:00:00,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324766018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:00,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:00:00,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 21:00:00,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906180974] [2024-06-03 21:00:00,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:00,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 21:00:00,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:00,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 21:00:00,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 21:00:00,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 61 [2024-06-03 21:00:00,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 182 transitions, 2049 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:00,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:00,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 61 [2024-06-03 21:00:00,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:02,740 INFO L124 PetriNetUnfolderBase]: 11292/17761 cut-off events. [2024-06-03 21:00:02,740 INFO L125 PetriNetUnfolderBase]: For 520025/520084 co-relation queries the response was YES. [2024-06-03 21:00:02,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99254 conditions, 17761 events. 11292/17761 cut-off events. For 520025/520084 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 113687 event pairs, 8455 based on Foata normal form. 7/17650 useless extension candidates. Maximal degree in co-relation 99173. Up to 16126 conditions per place. [2024-06-03 21:00:03,031 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 159 selfloop transitions, 26 changer transitions 0/201 dead transitions. [2024-06-03 21:00:03,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 201 transitions, 2583 flow [2024-06-03 21:00:03,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:00:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:00:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-03 21:00:03,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42950819672131146 [2024-06-03 21:00:03,033 INFO L175 Difference]: Start difference. First operand has 156 places, 182 transitions, 2049 flow. Second operand 5 states and 131 transitions. [2024-06-03 21:00:03,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 201 transitions, 2583 flow [2024-06-03 21:00:03,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 201 transitions, 2460 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-03 21:00:03,374 INFO L231 Difference]: Finished difference. Result has 158 places, 188 transitions, 2102 flow [2024-06-03 21:00:03,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2102, PETRI_PLACES=158, PETRI_TRANSITIONS=188} [2024-06-03 21:00:03,375 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 95 predicate places. [2024-06-03 21:00:03,375 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 188 transitions, 2102 flow [2024-06-03 21:00:03,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:03,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:03,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:00:03,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 21:00:03,376 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 21:00:03,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:03,376 INFO L85 PathProgramCache]: Analyzing trace with hash 483532433, now seen corresponding path program 1 times [2024-06-03 21:00:03,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:03,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809160662] [2024-06-03 21:00:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:03,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:00:04,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809160662] [2024-06-03 21:00:04,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809160662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:04,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:00:04,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 21:00:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172855396] [2024-06-03 21:00:04,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:04,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 21:00:04,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 21:00:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 21:00:05,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 61 [2024-06-03 21:00:05,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 188 transitions, 2102 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:05,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:05,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 61 [2024-06-03 21:00:05,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand